Add Field Group Label to Modules that depend on fieldgroup

Problem/Motivation

I believe the module Field Group Label belongs in the list of Modules that depend on fieldgroup.

Steps to reproduce

1. Go to Field Group
2. Scroll down to Modules that depend on fieldgroup

Expected result: List includes Field Group Label.
Actual result: List does not include Field Group Label.

Proposed resolution

Add Field Group Label module to the list and link to the Field Group Label page.

Remaining tasks

User interface changes

API changes

Data model changes