Integrated ment.io for users and channels mentions.

Note, the integration is only a draft, as it is scoped only to the
postView page for now. In the future it should be abstracted into a
component.
inspection of the pull request and fix of the APP-352
Merge pull request #25 from mondora/APP-368

APP-368
Merge branch 'master' into APP-370

Conflicts:
	bower.json