Permissions and menu changes for admin interface

This pull request covers a number of small changes to permissions and menu-related items in Springboard modules and the Springboard install profile

Assembla ticket 810:
- Added "internal name" field to Webforms that utilize webform_user. This is added when webform_user is enabled for a content type and it is added to existing webform_user node types in an update script. Also updated Forms views to display the new field.

Assembla ticket 814:
- Added links to SB Social and A/B Testing configuration pages to the Springboard Admin Menu in springboard_admin. 
- Created new unique permissions for the webform_goals module

This is related to a pull request for Springboard [link goes here].