GRN-11: Ability to configure room specific settings (#348)

* Added the ability to set room settings on create or update

* Added room settings alerts and made fixes to other alerts

* Small bug fixes related to rubocop and the create room modal

* Update test case and fixed issue with small edge case

* Update room.js

config/routes.rb

@@ -68,6 +68,7 @@ Rails.application.routes.draw do
   scope '/:room_uid' do
     post '/', to: 'rooms#join'
     patch '/', to: 'rooms#update', as: :update_room
+    post '/update_settings', to: 'rooms#update_settings'
     post '/start', to: 'rooms#start', as: :start_room
     get '/logout', to: 'rooms#logout', as: :logout_room