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

app/views/shared/modals/_create_role_modal.html.erb

@@ -0,0 +1,44 @@
+<%
+# 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/>.
+%>
+
+<div class="modal fade" id="createRoleModal" tabindex="-1" role="dialog">
+  <div class="modal-dialog modal-dialog-centered" role="document">
+    <div class="modal-content text-center">
+      <div class="modal-body">
+        <div class="card-body p-6">
+          <div class="card-title">
+            <h3><%= t("modal.create_role.title") %></h3>
+          </div>
+
+          <%= form_for(:role, url: admin_new_role_path) do |f| %>
+            <div class="input-icon mb-2">
+              <span class="input-icon-addon">
+                <i class="fas fa-user-tag"></i>
+              </span>
+              <%= f.text_field :name, id: "createRoleName", class: "form-control text-center", placeholder: t("modal.create_role.name_placeholder"), autocomplete: :off, required: true %>
+              <div class="invalid-feedback text-left"><%= t("modal.create_role.not_blank") %></div>
+            </div>
+            <div class="mt-4">
+                <%= f.submit t("modal.create_role.create"), class: "btn btn-primary btn-block" %>
+            </div>
+          <% end %>
+        </div>
+        <div class="card-footer">
+          <p><%= t("modal.create_role.footer_text") %></p>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>