feat(tagsInput): Add addFromAutocompleteOnly option

Add an option to allow tags to be added from the autocomplete list only.
When this option is on, the following ones will be ignored: addOnEnter,
addOnComma, addOnSpace, addOnBlur and allowLeftoverText.

Closes #60.
feat(configProvider): Make options optionally data-bound

Make all options from both tagsInput and autoComplete directives optionally
data-bound. Introduce a new method, setActiveInterpolation, on
tagsInputConfigurationProvider so one can set which options should have
interpolation active at all times.

Closes #73.
chore(build): Update build files
chore(release): Release v2.0.0