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

db/migrate/20190122210632_add_room_settings_to_room.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddRoomSettingsToRoom < ActiveRecord::Migration[5.0]
+  def change
+    add_column :rooms, :room_settings, :string, default: "{ }"
+  end
+end

db/schema.rb

@@ -10,17 +10,18 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20181217142710) do
+ActiveRecord::Schema.define(version: 20190122210632) do
 
   create_table "rooms", force: :cascade do |t|
     t.integer  "user_id"
     t.string   "name"
     t.string   "uid"
     t.string   "bbb_id"
-    t.integer  "sessions",     default: 0
+    t.integer  "sessions",      default: 0
     t.datetime "last_session"
-    t.datetime "created_at",               null: false
-    t.datetime "updated_at",               null: false
+    t.datetime "created_at",                    null: false
+    t.datetime "updated_at",                    null: false
+    t.string   "room_settings", default: "{ }"
     t.index ["bbb_id"], name: "index_rooms_on_bbb_id"
     t.index ["last_session"], name: "index_rooms_on_last_session"
     t.index ["name"], name: "index_rooms_on_name"