+ Alert and (proper) background task for notifying of requests to join a group

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
! Forgot the closing PHP tag

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #1034 from Oldiesmann/release-2.1

+ Alert and proper background request for group join request notifications