simple theme update

- npm package update
- apply #1226
- implement vim help dialog
- display cookies and search URL with preferences
- allow to enable / disable Open Access DOI rewrite
- add a clear text button on the left of the search button
- implement #1011 : the HTML title page is not set when using POST
- remove searx/static/themes/simple/img/loader.gif
- use full width when only there are only images as result

searx/static/themes/simple/package.json

@@ -1,15 +1,15 @@
 {
   "devDependencies": {
-    "grunt": "~1.0.1",
+    "grunt": "~1.0.3",
     "grunt-contrib-concat": "~1.0.1",
     "grunt-contrib-cssmin": "^2.2.1",
     "grunt-contrib-jshint": "~1.1.0",
     "grunt-contrib-less": "^1.4.1",
-    "grunt-contrib-uglify": "~3.0.1",
-    "grunt-contrib-watch": "~1.0.0",
-    "grunt-webfont": "^1.6.0",
+    "grunt-contrib-uglify": "~3.4.0",
+    "grunt-contrib-watch": "~1.1.0",
+    "grunt-webfont": "^1.7.1",
     "ionicons-npm": "^2.0.1",
-    "jslint": "^0.10.3",
+    "jslint": "^0.12.0",
     "less-plugin-clean-css": "^1.5.1"
   },
   "scripts": {