explicitly use components for some dependencies

jquery, backbone, font-awesome, underscore

some things available from components are not used:

- bootstrap, because it lacks the less sources, which we use
- highlight.js, because it lacks unminified sources, which debian doesn't like
update .gitignore

- less to exclude from font-awesome
- more common files we never care about
- sizzle, wtf?
fab update

- remove some newly ignored files
- update packages from their bower components repos

still leaving the copyright changes in bootstrap 2.3.2 uncommitted
Merge pull request #17 from minrk/components

explicitly use components for some dependencies