[js-cleanup] add short copyright notices to javascripts and remove superfluous newline (#20240).

Patch by Mischa The Evil.

git-svn-id: http://svn.redmine.org/redmine/trunk@14411 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/javascripts/application.js

@@ -654,4 +654,3 @@ $(document).ready(setupAjaxIndicator);
 $(document).ready(hideOnLoad);
 $(document).ready(addFormObserversForDoubleSubmit);
 $(document).ready(defaultFocus);
-

public/javascripts/context_menu.js

@@ -1,3 +1,6 @@
+/* Redmine - project management software
+   Copyright (C) 2006-2015  Jean-Philippe Lang */
+
 var contextMenuObserving;
 var contextMenuUrl;
 

public/javascripts/gantt.js

@@ -1,3 +1,6 @@
+/* Redmine - project management software
+   Copyright (C) 2006-2015  Jean-Philippe Lang */
+
 var draw_gantt = null;
 var draw_top;
 var draw_right;

public/javascripts/project_identifier.js

@@ -1,3 +1,6 @@
+/* Redmine - project management software
+   Copyright (C) 2006-2015  Jean-Philippe Lang */
+
 // Automatic project identifier generation
 
 function generateProjectIdentifier(identifier, maxlength) {

public/javascripts/repository_navigation.js

@@ -1,3 +1,6 @@
+/* Redmine - project management software
+   Copyright (C) 2006-2015  Jean-Philippe Lang */
+
 $(document).ready(function() {
   /* 
   If we're viewing a tag or branch, don't display it in the

public/javascripts/revision_graph.js

@@ -1,3 +1,6 @@
+/* Redmine - project management software
+   Copyright (C) 2006-2015  Jean-Philippe Lang */
+
 var revisionGraph = null;
 
 function drawRevisionGraph(holder, commits_hash, graph_space) {