JBIDE-17978 Need to turn on 'angular'-Tern Module automatically in case ...

...of AngularJS is detected on a project

A Dialog is added in order to ask user if he/she wants to add angular module to Tern.
Appropriate Tern project configuration is done as well.

Signed-off-by: vrubezhny <vrubezhny@exadel.com>