Fixed css and font options

Both options have an incorrect if statement, basically backwards. Fixed
those and also kept backwards compatibility.
Remove unknown shim.js

Not really sure what shim.js is or what it is supposed to be. Currently
kills `ember serve`, removed.
Use minified files for production

While using `app.import()`, specify the minified versions of files as
well. Just an easy feature to implement.
Import theme after standard css

The theme should be imported after the standard bootstrap css so that
the theme overrides standard styles.
Only import .map files for development env

The .map files are not needed on production builds, minified css does
not reference them.
Remove duplicate import of components

The bs_for_ember components were being imported twice when they were
being read from the filesystem. This fixes that issue and also returns
an array of just the component names instead of complete filename, to
mach what the users options would be.
Add both bower deps in one call

Use the new .addBowerPackagesToProject() hook available in ember-cli
0.1.2