1129489 - Document Apache CRLs.

https://bugzilla.redhat.com/show_bug.cgi?id=1129489
1066472 - Removed 409 response codes in docs for permission api calls
Merge pull request #1208 from dkliban/1066472

1066472 - Removed 409 response codes in docs for permission api calls
s/Reverse/Backwards/
Merge branch '1129489' into 2.4-release
Merge branch '2.4-release' into 2.4-testing
Merge branch '2.4-testing' into 2.4-dev