[Time Conductor] Test restoration of old values

...and clarify name of the function in scope which does this.

platform/commonUI/general/res/templates/controls/datetime-field.html

@@ -23,7 +23,7 @@
       ng-controller="DateTimeFieldController">
     <input type="text"
            ng-model="textValue"
-           ng-blur="restoreValue(); ngBlur()"
+           ng-blur="restoreTextValue(); ngBlur()"
            ng-class="{ error: textInvalid }">
     </input>
     <a class="ui-symbol icon icon-calendar"