Add efile Excel file

Downloaded on 1/28/14, this is the original data file that separates out
the data by form and by section of each form.
Add initial, crude database import script

This uses [roo][1] to parse the EFile Excel spreadsheet into a SQLite
database. Currently, as I continue to grapple with the data, it only
imports the first tab "A-Contributions". This is Schedule A of [CA Form
460 (page 5)][2].

I made a design decision to branch into multiple tables by type of
contributor (and also recipient, though currently there can't be any
other type than 'Committee'). The contributor branching is based on the
'Entity_Cd' column, the values of which are described in the legend at
the bottom of Form 460 page 5.

For now, I decided to commit the sqlite database so anyone fetching this
can see the output without setting up the Ruby environment.

(This is still a WIP, I will be restructuring the file organization and
addressing some of the inline TODOs in future commits.)

[1]: https://github.com/hmcgowan/roo
[2]: http://www.fppc.ca.gov/forms/rev201208/460.pdf
Move all the processing stuff into ./backend/
Add initial heroku setup
Remove sqlite3 (heroku dislikes it)
sqlite3 is out, postgres is in!
Actually establish a connection
Add some more views and ways to look at the data
Properly close pg connections
More features, you can navigate around now!
Add contributors back
Adding WIP of issue3
Update README.md
test merge
Basic framework for multiple graphs
Add .gitignore
Move everything

GET /js/app.js will now load the file /assets/js/app.js
Remove references to /assets/ at the beginning of URLs
css updates
Add images