Fixed styling and add/remove logic

Removed dependency to bootstrap.js
Merge pull request #55 from alex-deaconu/master

Fixed styling and add/remove logic
URL Field directive update and Angular e2e tests

- Modified the directive to instantiate the URL field plugin without any url value and to also check the typeof for url value
- Added Angular e2e HTML page
- Added Angular e2e tests
Merge pull request #56 from stulees/chore/url-field-ng-e2e

URL Field directive update and Angular e2e tests