Provide group APIs based on group ID

Issue Summary

Most (but not all) group APIs are based on group name rather than group ID. App development would be simplified if apps only had to provide a single type of identifier. This request is to overload APIs such that they allow group based operations to take a group ID parameter. Example APIs that this request relates to are:

• GET /wiki/rest/api/group/member

• GET /wiki/rest/api/group/{groupName}/member

• POST /wiki/rest/api/group/user

• DELETE /wiki/rest/api/group/user

• DELETE /wiki/rest/api/group

Steps to Reproduce

1. Step 1
2. Step 2

Expected Results

Actual Results

The below exception is thrown in the xxxxxxx.log file:

...

Workaround

Required, if there is no workaround please state:
Currently there is no known workaround for this behavior. A workaround will be added here when available