Various changes

mobile-friendly ui updates
admin user-edit bugfix
file cleanup
added searchFields
add blog search
remove unused code
add maintenance mode config

app/plugins/subscribe/views/admin/add.html

@@ -2,7 +2,7 @@
     <legend class="text-center">Add Subscriber</legend>
     <hr>
     {ADMIN_BREADCRUMBS}
-    <form action="" method="post">
+    <form method="post">
         <fieldset>
             <!-- Subject -->
             <div class="mb-3 row">