diff --git a/apps/files/css/detailsView.css b/apps/files/css/detailsView.css
index f91fe3319e..cab6a68404 100644
--- a/apps/files/css/detailsView.css
+++ b/apps/files/css/detailsView.css
@@ -16,6 +16,7 @@
 
 #app-sidebar .mainFileInfoView .icon {
 	display: inline-block;
+	background-size: 16px 16px;
 }
 
 #app-sidebar .mainFileInfoView .permalink {
@@ -102,23 +103,16 @@
 	color: #999;
 }
 
-#app-sidebar .file-details img {
-	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
-	opacity: .5;
-}
-
-#app-sidebar .file-details img:hover,
-#app-sidebar .file-details img:focus{
-	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
-	opacity: 1;
-}
-
 #app-sidebar .action-favorite {
-	vertical-align: text-bottom;
+	vertical-align: sub;
 	padding: 10px;
 	margin: -10px;
 }
 
+#app-sidebar .action-favorite > span{
+	opacity: .7 !important;
+}
+
 #app-sidebar .detailList {
 	float: left;
 }
diff --git a/apps/files/js/file-upload.js b/apps/files/js/file-upload.js
index d1ceb43672..0fbf3f559f 100644
--- a/apps/files/js/file-upload.js
+++ b/apps/files/js/file-upload.js
@@ -158,15 +158,6 @@ OC.FileUpload.prototype = {
 		this._conflictMode = mode;
 	},
 
-	/**
-	 * Returns whether the upload is in progress
-	 *
-	 * @return {boolean}
-	 */
-	isPending: function() {
-		return this.data.state() === 'pending';
-	},
-
 	deleteUpload: function() {
 		delete this.data.jqXHR;
 	},
@@ -560,21 +551,6 @@ OC.Uploader.prototype = _.extend({
 	showUploadCancelMessage: _.debounce(function() {
 		OC.Notification.showTemporary(t('files', 'Upload cancelled.'), {timeout: 10});
 	}, 500),
-	/**
-	 * Checks the currently known uploads.
-	 * returns true if any hxr has the state 'pending'
-	 * @returns {boolean}
-	 */
-	isProcessing:function() {
-		var count = 0;
-
-		jQuery.each(this._uploads, function(i, upload) {
-			if (upload.isPending()) {
-				count++;
-			}
-		});
-		return count > 0;
-	},
 	/**
 	 * callback for the conflicts dialog
 	 */
@@ -1134,13 +1110,6 @@ OC.Uploader.prototype = _.extend({
 			}
 		}
 
-		// warn user not to leave the page while upload is in progress
-		$(window).on('beforeunload', function(e) {
-			if (self.isProcessing()) {
-				return t('files', 'File upload is in progress. Leaving the page now will cancel the upload.');
-			}
-		});
-
 		//add multiply file upload attribute to all browsers except konqueror (which crashes when it's used)
 		if (navigator.userAgent.search(/konqueror/i) === -1) {
 			this.$uploadEl.attr('multiple', 'multiple');
diff --git a/apps/files/js/mainfileinfodetailview.js b/apps/files/js/mainfileinfodetailview.js
index e9259f75ba..1a69528fd1 100644
--- a/apps/files/js/mainfileinfodetailview.js
+++ b/apps/files/js/mainfileinfodetailview.js
@@ -20,9 +20,8 @@
 			'</a>' +
 		'</div>' +
 		'	<div class="file-details ellipsis">' +
-		'		<a href="#" ' +
-		'		class="action action-favorite favorite">' +
-		'			<img class="svg" alt="{{starAltText}}" src="{{starIcon}}" />' +
+		'		<a href="#" class="action action-favorite favorite permanent">' +
+		'			<span class="icon {{starClass}}" title="{{starAltText}}"></span>' +
 		'		</a>' +
 		'		{{#if hasSize}}<span class="size" title="{{altSize}}">{{size}}</span>, {{/if}}<span class="date live-relative-timestamp" data-timestamp="{{timestamp}}" title="{{altDate}}">{{date}}</span>' +
 		'	</div>' +
@@ -155,7 +154,7 @@
 					timestamp: this.model.get('mtime'),
 					date: OC.Util.relativeModifiedDate(this.model.get('mtime')),
 					starAltText: isFavorite ? t('files', 'Favorited') : t('files', 'Favorite'),
-					starIcon: OC.imagePath('core', isFavorite ? 'actions/starred' : 'actions/star'),
+					starClass: isFavorite ? 'icon-starred' : 'icon-star',
 					permalink: this._makePermalink(this.model.get('id')),
 					permalinkTitle: t('files', 'Copy local link')
 				}));
diff --git a/apps/files/tests/js/mainfileinfodetailviewSpec.js b/apps/files/tests/js/mainfileinfodetailviewSpec.js
index e81adbcf7a..faf0faa8d8 100644
--- a/apps/files/tests/js/mainfileinfodetailviewSpec.js
+++ b/apps/files/tests/js/mainfileinfodetailviewSpec.js
@@ -70,13 +70,13 @@ describe('OCA.Files.MainFileInfoDetailView tests', function() {
 		it('displays favorite icon', function() {
 			testFileInfo.set('tags', [OC.TAG_FAVORITE]);
 			view.setFileInfo(testFileInfo);
-			expect(view.$el.find('.favorite img').attr('src'))
-				.toEqual(OC.imagePath('core', 'actions/starred'));
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-starred')).toEqual(true);
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-star')).toEqual(false);
 
 			testFileInfo.set('tags', []);
 			view.setFileInfo(testFileInfo);
-			expect(view.$el.find('.favorite img').attr('src'))
-				.toEqual(OC.imagePath('core', 'actions/star'));
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-starred')).toEqual(false);
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-star')).toEqual(true);
 		});
 		it('displays mime icon', function() {
 			// File
@@ -187,13 +187,13 @@ describe('OCA.Files.MainFileInfoDetailView tests', function() {
 
 			testFileInfo.set('tags', [OC.TAG_FAVORITE]);
 
-			expect(view.$el.find('.favorite img').attr('src'))
-				.toEqual(OC.imagePath('core', 'actions/starred'));
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-starred')).toEqual(true);
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-star')).toEqual(false);
 
 			testFileInfo.set('tags', []);
 
-			expect(view.$el.find('.favorite img').attr('src'))
-				.toEqual(OC.imagePath('core', 'actions/star'));
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-starred')).toEqual(false);
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-star')).toEqual(true);
 		});
 		it('unbinds change listener from model', function() {
 			view.setFileInfo(testFileInfo);
@@ -207,8 +207,8 @@ describe('OCA.Files.MainFileInfoDetailView tests', function() {
 			testFileInfo.set('tags', [OC.TAG_FAVORITE]);
 
 			// no change
-			expect(view.$el.find('.favorite img').attr('src'))
-				.toEqual(OC.imagePath('core', 'actions/star'));
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-starred')).toEqual(false);
+			expect(view.$el.find('.action-favorite > span').hasClass('icon-star')).toEqual(true);
 		});
 	});
 	describe('events', function() {