Fixes for bower.json

The "main" option of bower.json should include the paths to the library's endpoints (rather than just the filenames), as per the [Bower spec](https://github.com/bower/bower#defining-a-package). This allows tools like [Bower Installer](https://github.com/blittle/bower-installer) to move only the required distribution code into a project.

As well, typeahead should work with any jQuery version >=1.9, rather than ~1.9 (which restricts the rest of an app to using that version).