Update Umbraco to 7.12.2

WebCms/Umbraco/Views/propertyeditors/dropdownFlexible/dropdownFlexible.html

@@ -0,0 +1,19 @@
+<div ng-controller="Umbraco.PropertyEditors.DropdownFlexibleController" ng-switch="model.config.multiple">
+
+    <select name="dropDownList"
+            class="umb-editor umb-dropdown"
+            ng-switch-default
+            ng-change="updateSingleDropdownValue()"
+            ng-model="model.singleDropdownValue"
+            ng-options="item.id as item.value for item in model.config.items">
+        <option></option>
+    </select>
+
+    <!--NOTE: This ng-switch is required because ng-multiple doesn't actually support dynamic bindings with multi-select lists -->
+    <select name="dropDownList"
+            class="umb-editor umb-dropdown"
+            ng-switch-when="1"
+            multiple
+            ng-model="model.value"
+            ng-options="item.id as item.value for item in model.config.items"></select>
+</div>