Fix linting errors in the Javascript

Gruntfile.js

@@ -1,15 +1,15 @@
 // This file is part of pa11y-dashboard.
-// 
+//
 // pa11y-dashboard is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
-// 
+//
 // pa11y-dashboard 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 General Public License for more details.
-// 
+//
 // You should have received a copy of the GNU General Public License
 // along with pa11y-dashboard.  If not, see <http://www.gnu.org/licenses/>.
 
@@ -28,7 +28,7 @@ module.exports = function (grunt) {
 				es3: false,
 				indent: 4,
 				latedef: false,
-				maxcomplexity: 4,
+				maxcomplexity: 6,
 				maxdepth: 2,
 				maxlen: 100,
 				maxparams: 4,