PLT-3346/PLT-3342/PLT-3360 EE: Add the ability to restrict channel management permissions (#3453)

* EE: Add the ability to restrict channel management permissions

* Always allow last user in a channel to delete that channel

webapp/components/sidebar_right_menu.jsx

@@ -186,10 +186,10 @@ export default class SidebarRightMenu extends React.Component {
             }
 
             if (global.window.mm_license.IsLicensed === 'true') {
-                if (global.window.mm_config.RestrictTeamInvite === Constants.TEAM_INVITE_SYSTEM_ADMIN && !isSystemAdmin) {
+                if (global.window.mm_config.RestrictTeamInvite === Constants.PERMISSIONS_SYSTEM_ADMIN && !isSystemAdmin) {
                     teamLink = null;
                     inviteLink = null;
-                } else if (global.window.mm_config.RestrictTeamInvite === Constants.TEAM_INVITE_TEAM_ADMIN && !isAdmin) {
+                } else if (global.window.mm_config.RestrictTeamInvite === Constants.PERMISSIONS_TEAM_ADMIN && !isAdmin) {
                     teamLink = null;
                     inviteLink = null;
                 }