Build: Enable "unused" option in jshint - Remove unused variables from codebase. - Closes gh-788

Squashed commit of the following:

commit 7f19f92c646f180bc067bb24123175251a64a9d6
Author: Mike Sherov <mike.sherov@gmail.com>
Date:   Tue Oct 23 10:34:28 2012 -0400

    put back in fake args for signatures that we want to keep

commit 257505a9e69da0c53e3a989dab87a13112045a29
Author: Mike Sherov <mike.sherov@gmail.com>
Date:   Tue Oct 23 08:10:20 2012 -0400

    changes per @scott_gonzalez

commit 12725480cb58e70865e5aa6e735009b6b035c8f3
Author: Mike Sherov <mike.sherov@gmail.com>
Date:   Mon Oct 22 22:54:05 2012 -0400

    clean up unused vars in ui directory

commit 563595e7aee5d4a5c096b2d1de655abdf920aacd
Author: Mike Sherov <mike.sherov@gmail.com>
Date:   Mon Oct 22 22:37:42 2012 -0400

    clean up unused vars in grunt and tests

6 files changed, 27 insertions, 47 deletions

diff --git a/tests/unit/datepicker/datepicker_core.js b/tests/unit/datepicker/datepicker_core.js
index e17b239e5..4abdfd106 100644
--- a/tests/unit/datepicker/datepicker_core.js
+++ b/tests/unit/datepicker/datepicker_core.js
@@ -12,31 +12,19 @@ function equalsDate(d1, d2, message) {
 	equal(d1.toString(), d2.toString(), message);
 }
 
-function equalsDateArray(a1, a2, message) {
-	if (!a1 || !a2) {
-		ok(false, message + ' - missing dates');
-		return;
-	}
-	a1[0] = (a1[0] ? new Date(a1[0].getFullYear(), a1[0].getMonth(), a1[0].getDate()) : '');
-	a1[1] = (a1[1] ? new Date(a1[1].getFullYear(), a1[1].getMonth(), a1[1].getDate()) : '');
-	a2[0] = (a2[0] ? new Date(a2[0].getFullYear(), a2[0].getMonth(), a2[0].getDate()) : '');
-	a2[1] = (a2[1] ? new Date(a2[1].getFullYear(), a2[1].getMonth(), a2[1].getDate()) : '');
-	deepEqual(a1, a2, message);
-}
-
-function addMonths(date, offset) {
+TestHelpers.addMonths = function(date, offset) {
 	var maxDay = 32 - new Date(date.getFullYear(), date.getMonth() + offset, 32).getDate();
 	date.setDate(Math.min(date.getDate(), maxDay));
 	date.setMonth(date.getMonth() + offset);
 	return date;
-}
+};
 
 function init(id, options) {
 	$.datepicker.setDefaults($.datepicker.regional['']);
 	return $(id).datepicker($.extend({showAnim: ''}, options || {}));
 }
 
-var PROP_NAME = 'datepicker';
+TestHelpers.PROP_NAME = 'datepicker';
 
 (function($) {
 
diff --git a/tests/unit/datepicker/datepicker_defaults.js b/tests/unit/datepicker/datepicker_defaults.js
index 28e150791..1e7d90852 100644
--- a/tests/unit/datepicker/datepicker_defaults.js
+++ b/tests/unit/datepicker/datepicker_defaults.js
@@ -2,8 +2,10 @@
  * datepicker_defaults.js
  */
 
+/*
 var datepicker_defaults = {
 	disabled: false
 };
 
-//TestHelpers.commonWidgetTests('datepicker', { defaults: datepicker_defaults });
+TestHelpers.commonWidgetTests('datepicker', { defaults: datepicker_defaults });
+*/
diff --git a/tests/unit/datepicker/datepicker_events.js b/tests/unit/datepicker/datepicker_events.js
index e35be62ce..b71067472 100644
--- a/tests/unit/datepicker/datepicker_events.js
+++ b/tests/unit/datepicker/datepicker_events.js
@@ -30,7 +30,7 @@ test('events', function() {
 	inp.val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
 	equal(selectedThis, inp[0], 'Callback selected this');
-	equal(selectedInst, $.data(inp[0], PROP_NAME), 'Callback selected inst');
+	equal(selectedInst, $.data(inp[0], TestHelpers.PROP_NAME), 'Callback selected inst');
 	equal(selectedDate, $.datepicker.formatDate('mm/dd/yy', date),
 		'Callback selected date');
 	inp.val('').datepicker('show').
@@ -59,7 +59,7 @@ test('events', function() {
 	inp.simulate('keydown', {keyCode: $.ui.keyCode.PAGE_UP});
 	date.setMonth(date.getMonth() - 1);
 	equal(selectedThis, inp[0], 'Callback change month/year this');
-	equal(selectedInst, $.data(inp[0], PROP_NAME), 'Callback change month/year inst');
+	equal(selectedInst, $.data(inp[0], TestHelpers.PROP_NAME), 'Callback change month/year inst');
 	equal(selectedDate, newMonthYear(date),
 		'Callback change month/year date - pgup');
 	inp.simulate('keydown', {keyCode: $.ui.keyCode.PAGE_DOWN});
@@ -107,7 +107,7 @@ test('events', function() {
 		val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ESCAPE});
 	equal(selectedThis, inp[0], 'Callback close this');
-	equal(selectedInst, $.data(inp[0], PROP_NAME), 'Callback close inst');
+	equal(selectedInst, $.data(inp[0], TestHelpers.PROP_NAME), 'Callback close inst');
 	equal(selectedDate, '', 'Callback close date - esc');
 	inp.val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
diff --git a/tests/unit/datepicker/datepicker_methods.js b/tests/unit/datepicker/datepicker_methods.js
index e7aa7602e..5e692d1a0 100644
--- a/tests/unit/datepicker/datepicker_methods.js
+++ b/tests/unit/datepicker/datepicker_methods.js
@@ -10,56 +10,56 @@ test('destroy', function() {
 	var inl,
 		inp = init('#inp');
 	ok(inp.is('.hasDatepicker'), 'Default - marker class set');
-	ok($.data(inp[0], PROP_NAME), 'Default - instance present');
+	ok($.data(inp[0], TestHelpers.PROP_NAME), 'Default - instance present');
 	ok(inp.next().is('#alt'), 'Default - button absent');
 	inp.datepicker('destroy');
 	inp = $('#inp');
 	ok(!inp.is('.hasDatepicker'), 'Default - marker class cleared');
-	ok(!$.data(inp[0], PROP_NAME), 'Default - instance absent');
+	ok(!$.data(inp[0], TestHelpers.PROP_NAME), 'Default - instance absent');
 	ok(inp.next().is('#alt'), 'Default - button absent');
 	// With button
 	inp= init('#inp', {showOn: 'both'});
 	ok(inp.is('.hasDatepicker'), 'Button - marker class set');
-	ok($.data(inp[0], PROP_NAME), 'Button - instance present');
+	ok($.data(inp[0], TestHelpers.PROP_NAME), 'Button - instance present');
 	ok(inp.next().text() === '...', 'Button - button added');
 	inp.datepicker('destroy');
 	inp = $('#inp');
 	ok(!inp.is('.hasDatepicker'), 'Button - marker class cleared');
-	ok(!$.data(inp[0], PROP_NAME), 'Button - instance absent');
+	ok(!$.data(inp[0], TestHelpers.PROP_NAME), 'Button - instance absent');
 	ok(inp.next().is('#alt'), 'Button - button removed');
 	// With append text
 	inp = init('#inp', {appendText: 'Testing'});
 	ok(inp.is('.hasDatepicker'), 'Append - marker class set');
-	ok($.data(inp[0], PROP_NAME), 'Append - instance present');
+	ok($.data(inp[0], TestHelpers.PROP_NAME), 'Append - instance present');
 	ok(inp.next().text() === 'Testing', 'Append - append text added');
 	inp.datepicker('destroy');
 	inp = $('#inp');
 	ok(!inp.is('.hasDatepicker'), 'Append - marker class cleared');
-	ok(!$.data(inp[0], PROP_NAME), 'Append - instance absent');
+	ok(!$.data(inp[0], TestHelpers.PROP_NAME), 'Append - instance absent');
 	ok(inp.next().is('#alt'), 'Append - append text removed');
 	// With both
 	inp= init('#inp', {showOn: 'both', buttonImageOnly: true,
 		buttonImage: 'img/calendar.gif', appendText: 'Testing'});
 	ok(inp.is('.hasDatepicker'), 'Both - marker class set');
-	ok($.data(inp[0], PROP_NAME), 'Both - instance present');
+	ok($.data(inp[0], TestHelpers.PROP_NAME), 'Both - instance present');
 	ok(inp.next()[0].nodeName.toLowerCase() === 'img', 'Both - button added');
 	ok(inp.next().next().text() === 'Testing', 'Both - append text added');
 	inp.datepicker('destroy');
 	inp = $('#inp');
 	ok(!inp.is('.hasDatepicker'), 'Both - marker class cleared');
-	ok(!$.data(inp[0], PROP_NAME), 'Both - instance absent');
+	ok(!$.data(inp[0], TestHelpers.PROP_NAME), 'Both - instance absent');
 	ok(inp.next().is('#alt'), 'Both - button and append text absent');
 	// Inline
 	inl = init('#inl');
 	ok(inl.is('.hasDatepicker'), 'Inline - marker class set');
 	ok(inl.html() !== '', 'Inline - datepicker present');
-	ok($.data(inl[0], PROP_NAME), 'Inline - instance present');
+	ok($.data(inl[0], TestHelpers.PROP_NAME), 'Inline - instance present');
 	ok(inl.next().length === 0 || inl.next().is('p'), 'Inline - button absent');
 	inl.datepicker('destroy');
 	inl = $('#inl');
 	ok(!inl.is('.hasDatepicker'), 'Inline - marker class cleared');
 	ok(inl.html() === '', 'Inline - datepicker absent');
-	ok(!$.data(inl[0], PROP_NAME), 'Inline - instance absent');
+	ok(!$.data(inl[0], TestHelpers.PROP_NAME), 'Inline - instance absent');
 	ok(inl.next().length === 0 || inl.next().is('p'), 'Inline - button absent');
 });
 
diff --git a/tests/unit/datepicker/datepicker_options.js b/tests/unit/datepicker/datepicker_options.js
index a01b9c7e0..7d3217364 100644
--- a/tests/unit/datepicker/datepicker_options.js
+++ b/tests/unit/datepicker/datepicker_options.js
@@ -8,7 +8,7 @@ module("datepicker: options");
 
 test('setDefaults', function() {
 	expect( 3 );
-	var inp = init('#inp');
+	init('#inp');
 	equal($.datepicker._defaults.showOn, 'focus', 'Initial showOn');
 	$.datepicker.setDefaults({showOn: 'button'});
 	equal($.datepicker._defaults.showOn, 'button', 'Change default showOn');
@@ -19,7 +19,7 @@ test('setDefaults', function() {
 test('option', function() {
 	expect( 17 );
 	var inp = init('#inp'),
-	inst = $.data(inp[0], PROP_NAME);
+	inst = $.data(inp[0], TestHelpers.PROP_NAME);
 	// Set option
 	equal(inst.settings.showOn, null, 'Initial setting showOn');
 	equal($.datepicker._get(inst, 'showOn'), 'focus', 'Initial instance showOn');
@@ -51,7 +51,7 @@ test('option', function() {
 test('change', function() {
 	expect( 12 );
 	var inp = init('#inp'),
-	inst = $.data(inp[0], PROP_NAME);
+	inst = $.data(inp[0], TestHelpers.PROP_NAME);
 	equal(inst.settings.showOn, null, 'Initial setting showOn');
 	equal($.datepicker._get(inst, 'showOn'), 'focus', 'Initial instance showOn');
 	equal($.datepicker._defaults.showOn, 'focus', 'Initial default showOn');
@@ -215,12 +215,12 @@ test('defaultDate', function() {
 	inp.datepicker('option', {defaultDate: ' -1 m '}).
 		datepicker('hide').val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
-	date = addMonths(new Date(), -1);
+	date = TestHelpers.addMonths(new Date(), -1);
 	equalsDate(inp.datepicker('getDate'), date, 'Default date -1 m');
 	inp.datepicker('option', {defaultDate: '+2M'}).
 		datepicker('hide').val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
-	date = addMonths(new Date(), 2);
+	date = TestHelpers.addMonths(new Date(), 2);
 	equalsDate(inp.datepicker('getDate'), date, 'Default date +2M');
 	inp.datepicker('option', {defaultDate: '-2y'}).
 		datepicker('hide').val('').datepicker('show').
@@ -236,7 +236,7 @@ test('defaultDate', function() {
 	inp.datepicker('option', {defaultDate: '+1M +10d'}).
 		datepicker('hide').val('').datepicker('show').
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
-	date = addMonths(new Date(), 1);
+	date = TestHelpers.addMonths(new Date(), 1);
 	date.setDate(date.getDate() + 10);
 	equalsDate(inp.datepicker('getDate'), date, 'Default date +1M +10d');
 	// String date values
@@ -380,7 +380,7 @@ test('minMax', function() {
 		simulate('keydown', {keyCode: $.ui.keyCode.ENTER});
 	equalsDate(inp.datepicker('getDate'), date,
 		'Min/max - -1w, +1 M +10 D - ctrl+pgup');
-	date = addMonths(new Date(), 1);
+	date = TestHelpers.addMonths(new Date(), 1);
 	date.setDate(date.getDate() + 10);
 	inp.val('').datepicker('show');
 	inp.simulate('keydown', {ctrlKey: true, keyCode: $.ui.keyCode.PAGE_DOWN}).
@@ -665,16 +665,6 @@ function beforeDay(date) {
 		(date.getDate() % 3 === 0 ? 'Divisble by 3' : '')];
 }
 
-function calcWeek(date) {
-	var doy = date.getDate() + 6,
-		m = date.getMonth() - 1;
-	for (; m >= 0; m--) {
-		doy += $.datepicker._getDaysInMonth(date.getFullYear(), m);
-	}
-	// Simple count from 01/01 starting at week 1
-	return Math.floor(doy / 7);
-}
-
 test('callbacks', function() {
 	expect( 13 );
 	// Before show
diff --git a/tests/unit/datepicker/datepicker_tickets.js b/tests/unit/datepicker/datepicker_tickets.js
index 57b25c3ff..ff5dfde63 100644
--- a/tests/unit/datepicker/datepicker_tickets.js
+++ b/tests/unit/datepicker/datepicker_tickets.js
@@ -8,7 +8,7 @@ module("datepicker: tickets");
 // http://forum.jquery.com/topic/several-breaking-changes-in-jquery-ui-1-8rc1
 test('beforeShowDay-getDate', function() {
 	expect( 3 );
-	var inp = init('#inp', {beforeShowDay: function(date) { inp.datepicker('getDate'); return [true, '']; }}),
+	var inp = init('#inp', {beforeShowDay: function() { inp.datepicker('getDate'); return [true, '']; }}),
 		dp = $('#ui-datepicker-div');
 	inp.val('01/01/2010').datepicker('show');
 	// contains non-breaking space