Changed the AngularJS_VisualStudio_Intellisense so that it is always hidden from IntelliSense (using the _$ prefix).

Resetting the "definitions" for angular.module and angular.forEach back to their original functions, usning intellisense.redirectDefinition - this doesn't alter the behavior of the extension, but enables features like Go To Definition to work correctly.
Merge pull request #10 from jmatthiesen/master

Cleanup of IntelliSense and Go To Definition Behavior