Support for help form type

As in jsonform.
Lacks test and documentation. Needs ngSanitize included to work.

Author: davidlgj

bower.json

@@ -24,7 +24,8 @@
   "dependencies": {
     "angular": "~1.2.18",
     "tv4": "~1.0.15",
-    "pickadate": "~3.5.2"
+    "pickadate": "~3.5.2",
+    "angular-sanitize": "~1.2.18"
   },
   "devDependencies": {
     "angular-ui-ace": "bower"