Push warning fixed after commit 3803caf
Allow null branch in GitCommandHelpers.GetFullBranchName

Fix NullReferenceException in GitCommandHelpers.PushCmd overload called by Gerrit plugin.
(cherry picked from commit 8323f3d2dc2e26c86b129defbad5fca8398558f8)
Additional details added to form Push
Merge branch 'release/2.47'