Updating Select2 to version 3.4.2
Adding EXTRA_SETTINGS config to add additional configs
Adding an extra_settings attribute to the TagAutoSuggest class so extending it is easy
Adding a better handling of a single multi word tag
Added strip quotes to resolve bug at validation error.
Merge pull request #1 from IsmaelMT/master

Added strip quotes to resolve bug at validation error.
Adding the option to set the url attribute in a widget so that you can have several urls throughout the site
Merge remote-tracking branch 'kpantic/master'
Add missing import