Back portted fixes from ASF

Author: davidlgj

src/array.html

@@ -1,7 +1,7 @@
 <div  class="schema-form-array {{form.htmlClass}}"
       sf-field-model="sf-new-array"
       sf-new-array>
-  <h3 ng-show="form.title && form.notitle !== true"></h3>
+  <label class="control-label" ng-show="showTitle()">{{ form.title }}</label>
   <ol class="list-group" ui-sortable>
     <li class="list-group-item {{form.fieldHtmlClass}}"
         schema-form-array-items

src/fieldset.html

@@ -1,4 +1,4 @@
 <fieldset ng-disabled="form.readonly" class="schema-form-fieldset {{form.htmlClass}}">
-  <legend ng-show="form.title && !form.notitle">{{ form.title }}</legend>
+  <legend ng-class="{'sr-only': !showTitle() }">{{ form.title }}</legend>
   <div class="help-block" ng-show="form.description" ng-bind-html="form.description"></div>
 </fieldset>