Simplify method names in admin menu component

We no longer need to use the `menu_` prefix, since now these methods
aren't helper methods anymore, and so their names won't collide with
other helpers.

app/components/admin/menu_component.rb

@@ -1,7 +1,7 @@
 class Admin::MenuComponent < ApplicationComponent
   private
 
-    def menu_moderated_content?
+    def moderated_content?
       moderated_sections.include?(controller_name) && controller.class.parent != Admin::Legislation
     end
 
@@ -10,50 +10,50 @@ class Admin::MenuComponent < ApplicationComponent
        "hidden_budget_investments", "hidden_proposal_notifications"]
     end
 
-    def menu_budgets?
+    def budgets?
       controller_name.starts_with?("budget")
     end
 
-    def menu_polls?
+    def polls?
       controller.class.parent == Admin::Poll::Questions::Answers ||
         %w[polls active_polls recounts results questions answers].include?(controller_name) &&
         action_name != "booth_assignments"
     end
 
-    def menu_booths?
+    def booths?
       %w[officers booths shifts booth_assignments officer_assignments].include?(controller_name) ||
         controller_name == "polls" && action_name == "booth_assignments"
     end
 
-    def menu_profiles?
+    def profiles?
       %w[administrators organizations officials moderators valuators managers users].include?(controller_name)
     end
 
-    def menu_settings?
+    def settings?
       controllers_names = ["settings", "tags", "geozones", "images", "content_blocks",
                            "local_census_records", "imports"]
       controllers_names.include?(controller_name) &&
         controller.class.parent != Admin::Poll::Questions::Answers
     end
 
-    def menu_customization?
+    def customization?
       ["pages", "banners", "information_texts", "documents"].include?(controller_name) ||
-        menu_homepage? || menu_pages?
+        homepage? || pages?
     end
 
-    def menu_homepage?
+    def homepage?
       ["homepage", "cards"].include?(controller_name) && params[:page_id].nil?
     end
 
-    def menu_pages?
+    def pages?
       ["pages", "cards"].include?(controller_name) && params[:page_id].present?
     end
 
-    def menu_dashboard?
+    def dashboard?
       ["actions", "administrator_tasks"].include?(controller_name)
     end
 
-    def submenu_local_census_records?
+    def local_census_records?
       controller_name == "local_census_records" ||
         (controller_name == "imports" && controller.class.parent == Admin::LocalCensusRecords)
     end