Adresses #367 and partially #296
updated description text for each question type
wrapped "card" content in ".menu-item" div.
Update plus button styles, addresses #304
Update plus button, addresses #304
the latest of the changes from the wednesday night css work with @chrisnager. tp #295 #296 etc. Restyling the form builder
moved icons into a collection of models defined in a separate file
Merge pull request #64 from kobotoolbox/tp295

This addresses the #295 user story and many of its tasks.