Typeahead does not call $apply when resetting errors with typeahead-editable="false"

[Siggen]

Bug description:

When configured with typeahead-editable="false", typeahead doesn't call $apply when resetting 'editable' and 'parse' errors on blur. As a consequence, any template depending on $invalid ou $error tag is not (always) updated.

Link to minimally-working plunker that reproduces the issue:

http://run.plnkr.co/plunks/oI6OeiiZg5LkeNQMG3n3/

To reproduce

1. type 'www' in typeahead
2. hit tab
3. => error flag is cleared (OK)
4. type again 'www' in typeahead
5. hit tab
6. => error flag is not cleared (KO)

Version of Angular, UIBS, and Bootstrap

Angular: 1.5.6

UIBS: 1.3.3

Bootstrap: 3.3.5

[Siggen]

I'll add a PR shortly.