FIX: Check active themes for all requests

FIX: Check active themes for all requests

Previously, the list of active themes was only used in html views. Now we have theme modifiers, themes can affect .json routes.

diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 3ae29ee..813af0c 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -376,8 +376,7 @@ class ApplicationController < ActionController::Base
   end
 
   def handle_theme
-    return if request.xhr? || request.format == "json" || request.format == "js"
-    return if request.method != "GET"
+    return if request.format == "js"
 
     resolve_safe_mode
     return if request.env[NO_CUSTOM]

GitHub sha: 91fff746