Removing jQuery plugin and JSHint enforcement

- Modified gulpfile.js to remove all jQuery tasks and to enforce JSHint failure
- Particular jQuery plugin related files removed
- JSHint globals being inserted where needed
- Updated Angular e2e test HTML and JS to use btn-google-drive class for element retrieval
Merge pull request #21 from stulees/chore/remove-jquery-version

Removing jQuery plugin and JSHint enforcement