Merge pull request #214 from nifgraup/master

Add a missing requirement to README.md
Split JS even MOAR into search.js
Added some basic drag & drop AJAX calls to tag API. Issue #213
Make note of FIXME on search_tags
Some cleanup of search json, tweaking
Adding .gitignores to make sure the Maildir test folders exist
Wait for the subprocess to end on send
Fix a bug when the pile doesn't have any mail.