Updated mimosa-config.coffee to use assets obtained through bower

I got a little confused when trying to get up to speed with Mimosa and Durandal because a number of the files under the *assets/**/vendor* folders seemed to come from the checked in Mimosa skeleton rather than from the bower/mimosa mechanisms which I believe are supposed to put these in place.

The checked in *mimosa-config.coffee* resolves most of the bower issues seen when running `mimosa watch -C`

I modified the sample applications' *main.js* to require bootstrap without the '-3.1.0' suffix, reflecting what is copied by mimosa from bower. 

The other modified files and deleted files are a direct result of changes to the mimosa-bower config after cleaning things up.