small cosmetic changes (#1872)

* removed remains

* comment adapted

* removes blinking background from icons on buttons 

like copy (from room links)

Co-authored-by: Ahmad Farhat <ahmad.af.farhat@gmail.com>

app/assets/stylesheets/application.scss

@@ -183,3 +183,7 @@ table {
 #delete-confirm:disabled {
   cursor: not-allowed;
 }
+
+.btn i {
+  transition: all .15s;
+}

app/helpers/theming_helper.rb

@@ -27,7 +27,7 @@ module ThemingHelper
     @settings.get_value("Legal URL") || ""
   end
 
-  # Returns the logo based on user's provider
+  # Returns the privacy policy URL based on user's provider
   def privpolicy_url
     @settings.get_value("Privacy Policy URL") || ""
   end

config/locales/en.yml

@@ -370,8 +370,6 @@ en:
         verify_text: 'To verify your account, just follow this link: %{url}'
         verify_link: Verify Account
         thanks: Thanks for joining and have a great day!
-  maintenance:
-    window_alert: Maintenance window scheduled for %{date}
   max_concurrent: The maximum number of concurrent sessions allowed has been reached!
   merged: Merged
   modal: