move more sizing logic to css

Signed-off-by: Robin Appelman <robin@icewind.nl>

core/css/jquery.ocdialog.css

 	background: transparent;
 	right: 0;
 	bottom: 0;
-	padding: 20px;
-	padding-bottom: 10px;
+	padding: 10px;
+	padding-bottom: 0;
 	box-sizing: border-box;
 	width: 100%;
 	background-image: linear-gradient(rgba(255, 255, 255, 0), rgba(255, 255, 255, 1));
 	top: 0; left: 0;
 	width: 100%; height: 100%;
 }
+
+.oc-dialog-content {
+	width: 100%;
+}

core/css/styles.css

 	box-sizing: border-box;
 	display: inline-block;
 	overflow-y: auto;
-	height: calc(100% + 20px); /** overflow under the button row */
+	height: 100%; /** overflow under the button row */
 	width: 100%;
 	padding-bottom: 55px;
 }

core/js/jquery.ocdialog.js

 			$.Widget.prototype._setOptions.apply(this, arguments);
 		},
 		_setSizes: function() {
-			var content_height = this.$dialog.height();
+			var lessHeight = 0;
 			if(this.$title) {
-				content_height -= this.$title.outerHeight(true);
+				lessHeight += this.$title.outerHeight(true);
 			}
 			if(this.$buttonrow) {
-				content_height -= this.$buttonrow.outerHeight(true);
-			}
-			this.parent = this.$dialog.parent().length > 0 ? this.$dialog.parent() : $('body');
-			if (this.parent.height() > 0) {
-				content_height = Math.min(content_height, this.parent.height() - 20);
-			}
-			if (content_height> 0) {
-				this.element.css({
-					height: content_height + 'px',
-					width: this.$dialog.innerWidth() - 30 + 'px'
-				});
-			} else {
-				this.element.css({
-					width : this.$dialog.innerWidth() - 30 + 'px'
-				});
+				lessHeight += this.$buttonrow.outerHeight(true);
 			}
+			this.element.css({
+				'height': 'calc(100% - ' + lessHeight + 'px)'
+			});
 		},
 		_createOverlay: function() {
 			if(!this.options.modal) {

core/js/oc-dialogs.js

 			self.$filePicker.ocdialog({
 				closeOnEscape: true,
 				// max-width of 600
-				width: Math.min((4/5)*$(document).width(), 600),
-				height: Math.min((4 / 5) * $(document).height(), 500),
+				width: 600,
+				height: 500,
 				modal: modal,
 				buttons: buttonlist,
 				close: function() {