ehnc Finish project layout

Added new bar to the project layout as specified in mock

TODO: unsure what to set the width of the bar to.
TODO: check responsiveness 

-- 2nd commit
Fixes to responsive layout
The responsive layout was broken at smaller breakpoints due to
using a max width. This new setup allows user to set positions
using straight percentages in markup and the css will take care of
rest.

@cmc333333 I haven't addressed your issues yet.

@ericronne I would like some help on how to deal with the layout at the smallest breakpoint. Here is a screenshot of the issues:
![screenshot from 2014-11-14 09 13 05](https://cloud.githubusercontent.com/assets/1701077/5049985/ea04c5de-6bde-11e4-8ec5-04a93ad2b93b.png)

This still isn't quite right. Currently, `percent_funded` is the money raised over the goal, and `percent_community_funded` is the community contribution over the goal + the community contribution. Those percents, then, aren't really comparable.

If we're assuming that when we want a percent, we always want a fraction of the *total* amount of the project (i.e. the fund-raising goal + the community contribution), `percent_funded` should be modified to also be out of that sum.

Unrelated: why are you using a template variable for one of these percents and a method call for the other?