Merge branch 'develop' into 'master'

Develop

manifest.appcache

@@ -1,5 +1,5 @@
 CACHE MANIFEST
-# 6.1.1
+# 6.1.2
 
 COPYING
 README.md

uhr.js

@@ -35,7 +35,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 		}
 	};
 	// auto-detect themes
-	var styleSheets = $('head link[rel=stylesheet]');
+	var styleSheets = $('link[rel=stylesheet]');
 	for (var i = 0; i < styleSheets.length; i++) {
 		var styleSheet = $(styleSheets[i]);
 		var styleClass = styleSheet.attr('data-class');