The relevance parameter is added to JS Angular Completion Proposals and ...

...this

relevance is set to be higher than the other proposals.

Issue: https://github.com/angelozerr/angularjs-eclipse/issues/97
Depends on: https://github.com/angelozerr/tern.java/pull/122

Signed-off-by: vrubezhny <vrubezhny@exadel.com>