feat(timepicker): add semantic classes

- Adds semantic classes to assist with styling

Closes angular-ui#4764
Closes angular-ui#4971

Author: wesleycho

Diff for: template/timepicker/timepicker.html

@@ -1,33 +1,33 @@
-<table>
+<table class="uib-timepicker">
   <tbody>
     <tr class="text-center" ng-show="::showSpinners">
-      <td><a ng-click="incrementHours()" ng-class="{disabled: noIncrementHours()}" class="btn btn-link" ng-disabled="noIncrementHours()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
+      <td class="uib-increment hours"><a ng-click="incrementHours()" ng-class="{disabled: noIncrementHours()}" class="btn btn-link" ng-disabled="noIncrementHours()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
       <td>&nbsp;</td>
-      <td><a ng-click="incrementMinutes()" ng-class="{disabled: noIncrementMinutes()}" class="btn btn-link" ng-disabled="noIncrementMinutes()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
+      <td class="uib-increment minutes"><a ng-click="incrementMinutes()" ng-class="{disabled: noIncrementMinutes()}" class="btn btn-link" ng-disabled="noIncrementMinutes()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
       <td ng-show="showSeconds">&nbsp;</td>
-      <td ng-show="showSeconds"><a ng-click="incrementSeconds()" ng-class="{disabled: noIncrementSeconds()}" class="btn btn-link" ng-disabled="noIncrementSeconds()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
+      <td ng-show="showSeconds" class="uib-increment seconds"><a ng-click="incrementSeconds()" ng-class="{disabled: noIncrementSeconds()}" class="btn btn-link" ng-disabled="noIncrementSeconds()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-up"></span></a></td>
       <td ng-show="showMeridian"></td>
     </tr>
     <tr>
-      <td class="form-group" ng-class="{'has-error': invalidHours}">
+      <td class="form-group uib-time hours" ng-class="{'has-error': invalidHours}">
         <input style="width:50px;" type="text" placeholder="HH" ng-model="hours" ng-change="updateHours()" class="form-control text-center" ng-readonly="::readonlyInput" maxlength="2" tabindex="{{::tabindex}}" ng-disabled="disabled" ng-blur="blur()">
       </td>
-      <td>:</td>
-      <td class="form-group" ng-class="{'has-error': invalidMinutes}">
+      <td class="uib-separator">:</td>
+      <td class="form-group uib-time minutes" ng-class="{'has-error': invalidMinutes}">
         <input style="width:50px;" type="text" placeholder="MM" ng-model="minutes" ng-change="updateMinutes()" class="form-control text-center" ng-readonly="::readonlyInput" maxlength="2" tabindex="{{::tabindex}}" ng-disabled="disabled" ng-blur="blur()">
       </td>
-      <td ng-show="showSeconds">:</td>
-      <td class="form-group" ng-class="{'has-error': invalidSeconds}" ng-show="showSeconds">
+      <td ng-show="showSeconds" class="uib-separator">:</td>
+      <td class="form-group uib-time seconds" ng-class="{'has-error': invalidSeconds}" ng-show="showSeconds">
         <input style="width:50px;" type="text" ng-model="seconds" ng-change="updateSeconds()" class="form-control text-center" ng-readonly="readonlyInput" maxlength="2" tabindex="{{::tabindex}}" ng-disabled="disabled" ng-blur="blur()">
       </td>
-      <td ng-show="showMeridian"><button type="button" ng-class="{disabled: noToggleMeridian()}" class="btn btn-default text-center" ng-click="toggleMeridian()" ng-disabled="noToggleMeridian()" tabindex="{{::tabindex}}">{{meridian}}</button></td>
+      <td ng-show="showMeridian" class="uib-time am-pm"><button type="button" ng-class="{disabled: noToggleMeridian()}" class="btn btn-default text-center" ng-click="toggleMeridian()" ng-disabled="noToggleMeridian()" tabindex="{{::tabindex}}">{{meridian}}</button></td>
     </tr>
     <tr class="text-center" ng-show="::showSpinners">
-      <td><a ng-click="decrementHours()" ng-class="{disabled: noDecrementHours()}" class="btn btn-link" ng-disabled="noDecrementHours()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
+      <td class="uib-decrement hours"><a ng-click="decrementHours()" ng-class="{disabled: noDecrementHours()}" class="btn btn-link" ng-disabled="noDecrementHours()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
       <td>&nbsp;</td>
-      <td><a ng-click="decrementMinutes()" ng-class="{disabled: noDecrementMinutes()}" class="btn btn-link" ng-disabled="noDecrementMinutes()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
+      <td class="uib-decrement minutes"><a ng-click="decrementMinutes()" ng-class="{disabled: noDecrementMinutes()}" class="btn btn-link" ng-disabled="noDecrementMinutes()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
       <td ng-show="showSeconds">&nbsp;</td>
-      <td ng-show="showSeconds"><a ng-click="decrementSeconds()" ng-class="{disabled: noDecrementSeconds()}" class="btn btn-link" ng-disabled="noDecrementSeconds()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
+      <td ng-show="showSeconds" class="uib-decrement seconds"><a ng-click="decrementSeconds()" ng-class="{disabled: noDecrementSeconds()}" class="btn btn-link" ng-disabled="noDecrementSeconds()" tabindex="{{::tabindex}}"><span class="glyphicon glyphicon-chevron-down"></span></a></td>
       <td ng-show="showMeridian"></td>
     </tr>
   </tbody>