migrate permissions and admin flag to user.role

src/routes/profile.js

@@ -37,9 +37,8 @@ function get(req, res, next) {
         fallbackEmail: req.user.fallbackEmail,
         displayName: req.user.displayName,
         twoFactorAuthenticationEnabled: req.user.twoFactorAuthenticationEnabled,
-        admin: req.user.admin,
+        role: req.user.role,
         source: req.user.source,
-        permissions: req.user.permissions,
         avatarUrl: fs.existsSync(path.join(paths.PROFILE_ICONS_DIR, req.user.id)) ? `${settings.adminOrigin()}/api/v1/profile/avatar/${req.user.id}` : `https://www.gravatar.com/avatar/${emailHash}.jpg`
     }));
 }