feat(timepicker): always pad minutes

- Always pad minutes as a UX improvement

Author: wesleycho

Diff for: src/timepicker/test/timepicker.spec.js

@@ -847,7 +847,7 @@ describe('timepicker directive', function () {
       var el = getMinutesInputEl();
 
       changeInputValueTo(el, 9);
-      expect(getTimeState()).toEqual(['02', '9', 'PM']);
+      expect(getTimeState()).toEqual(['02', '09', 'PM']);
       expect(getModelState()).toEqual([14, 9]);
 
       el.blur();

Diff for: src/timepicker/timepicker.js

@@ -247,7 +247,7 @@ angular.module('ui.bootstrap.timepicker', [])
     }
 
     $scope.hours = keyboardChange === 'h' ? hours : pad(hours);
-    $scope.minutes = keyboardChange === 'm' ? minutes : pad(minutes);
+    $scope.minutes = pad(minutes);
     $scope.meridian = selected.getHours() < 12 ? meridians[0] : meridians[1];
   }