WATERSMART-302
* adding svg files to img directory
* swapped in svg files for png (sizes need fixing)
WATERSMART-302
* updated images to square versions
* a few refactors made it in here
upgraded to font-awesome 4
* using webjars rather than thirdparty dir
menu changes
* starts collapsed
* switched to bootstrap collapse rather than custom javascript
Merge pull request #49 from jiwalker-usgs/master

WATERSMART-302 and misc