Merge pull request #1 from bzamansky/Batya

working on the remove button
app.py -- addAjax - gets a crush, writes to mongo and returns rendered
html for the table of crushes

z.js -- jquery event bindings for click and enter to add crushes. Also
makes the ajax call to addAjax

templatess -- crushesonly.html -- pulled out the table part of add.html

add.html - modified to do adding with three elements, not a textarea
Merge pull request #4 from zamansky/Batya

Batya