FEATURE: minor UI tweaks in template settings + add events into OnePage base template

app/Handlers/Contracts/BaseModuleHandler.php

@@ -5,8 +5,6 @@ use App\Models\User;
 
 interface BaseModuleHandler
 {
-//    public static function getModuleId();
-
     /**
      * Register admin menu (or multiple ones)
      *
@@ -18,9 +16,10 @@ interface BaseModuleHandler
     public static function registerAdminMenu(User $user);
 
     /**
-     * Install module
+     * Install module.
      *
-     * @return mixed
+     * This method is called after inserting info about module into database. It can be called only using Artisan in
+     * CLI.
      */
     public static function install();
 }