Put url parameters outside of erb on paths resolve

[adie]

Original problem was with fontawesome, with rake bower:resolve, bower-rails was generating urls like

  src: url(<%= asset_path 'fontawesome/fonts/fontawesome-webfont.eot?v=4.4.0' %>);

And when we tried to manually compile assets from code in production - Rails was trying to fetch that exact string from assets.digest instead of just 'fontawesome/fonts/fontawesome-webfont.eot' - and we were getting AssetNotPrecompiledError
Essentially this PR just changes bower-rails to generate such urls as

  src: url(<%= asset_path 'fontawesome/fonts/fontawesome-webfont.eot' %>?v=4.4.0);

[coveralls]

Coverage increased (+3.2%) to 90.985% when pulling 98451ad on Fuseit:fix-css-paths-with-params into 874142c on rharriso:master.

[SergeyKishenin]

Thanks!