GRN2-176: Create a role editor that allows admins to specify what permissions each role has (#709)

* Add roles editor

* Add colour selection ability to roles

* Add ability to assign roles to users in the UI

* Remove rolify and replace it with our own custom roles implemenation

* - Fix all existing roles functionality
- Fix super admins

* Fix bugs with new customers not have default roles

* Add can't create room setting

* Code improvements

* Fix migration

* Add tests for new methods

* Translate reserved role names

* Pull roles from saml/ldap

* Fix rspec

* Fix scrutinizer issues

* Fix email promoted/demoted tests

* Apply comments

* Redirect directly to the main room

* Add comments

spec/models/role_spec.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+#
+# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
+#
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+
+require "rails_helper"
+
+describe Role, type: :model do
+    it "should return duplicate if role name is in reserved role names" do
+        expect(Role.duplicate_name("admin", "greenlight")).to eq(true)
+    end
+
+    it "should return duplicate if role name matched another" do
+        Role.create(name: "test", provider: "greenlight")
+        expect(Role.duplicate_name("test", "greenlight")).to eq(true)
+    end
+
+    it "should return false role name doesn't exist" do
+        Role.create(name: "test", provider: "greenlight")
+        expect(Role.duplicate_name("test1", "greenlight")).to eq(false)
+    end
+end