fix(tabs): id's should no longer cause issues when used within tab la…

…bels or contents

Closes #2326

src/components/tabs/js/tabDirective.js

@@ -82,28 +82,20 @@
       scope.deselect = scope.deselect || angular.noop;
       scope.select = scope.select || angular.noop;
 
-
       scope.$watch('active', function (active) { if (active) ctrl.select(data.getIndex()); });
       scope.$watch('disabled', function () { ctrl.refreshIndex(); });
-      scope.$watch(getTemplate, function (template, oldTemplate) {
-        if (template === oldTemplate) return;
-        data.template = template;
-        ctrl.updateInkBarStyles();
-      });
-      scope.$watch(getLabel, function (label, oldLabel) {
-        if (label === oldLabel) return;
-        data.label = label;
-        ctrl.updateInkBarStyles();
-      });
       scope.$on('$destroy', function () { ctrl.removeTab(data); });
 
       function getLabel () {
         return attr.label || (element.find('md-tab-label')[0] || element[0]).innerHTML;
       }
 
       function getTemplate () {
-        var content = element.find('md-tab-template');
-        return content.length ? content.html() : attr.label ? element.html() : null;
+        var content = element.find('md-tab-template'),
+            template = content.length ? content.html() : attr.label ? element.html() : null;
+        if (content.length) content.remove();
+        else element.empty();
+        return template;
       }
     }
   }

src/components/tabs/js/tabsController.js

@@ -128,7 +128,7 @@
     function handleWindowResize () {
       ctrl.lastSelectedIndex = $scope.selectedIndex;
       updateInkBarStyles();
-      ctrl.offsetLeft = shouldPaginate() ? fixOffset(ctrl.offsetLeft) : 0;
+      ctrl.offsetLeft = fixOffset(ctrl.offsetLeft);
     }
 
     function insertTab (tabData, index) {
@@ -291,7 +291,7 @@
     }
 
     function fixOffset (value) {
-      if (!elements.tabs.length) return;
+      if (!elements.tabs.length || !shouldPaginate()) return 0;
       var lastTab = elements.tabs[elements.tabs.length - 1],
           totalWidth = lastTab.offsetLeft + lastTab.offsetWidth;
       value = Math.max(0, value);