Fixes: Wrong fixed width styles, new value remains on focusout with typeahead

Fixes: #219
Also, there is a problem that you can see on your own example page. Follow instructions:
1. Go to the http://timschlechter.github.io/bootstrap-tagsinput/examples/
2. Scroll down to the "Typeahead" example
3. Enter something new (not an offer from typeahead), for example "Something New", hit Enter
4. Focus out of the typeahead input (click below it)
You can see that "Something New" text once again appears in the input. That shouldn't happen.
This pull request also fixes this problem.