fix remaining default resx differences, enhance module message with ability to dismiss, fix issue in ConfigManager.RemoveSetting, introduce package registry service

Oqtane.Client/Modules/Controls/ModuleMessage.razor

@@ -4,12 +4,15 @@
 
 @if (!string.IsNullOrEmpty(_message))
 {
-    <div class="@_classname" role="alert">
+    <div class="@_classname alert-dismissible fade show" role="alert">
         @((MarkupString)_message)
         @if (Type == MessageType.Error && PageState != null && UserSecurity.IsAuthorized(PageState.User, RoleNames.Host))
         {
             @((MarkupString)"&nbsp;&nbsp;")<NavLink href="@NavigateUrl("admin/log")">View Details</NavLink>
         }
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+            <span aria-hidden="true">&times;</span>
+        </button>
     </div>
     <br />
 }