mailreport - Fixed a bug with quarterly report scheduling

`monthofyear` was being unset for all intervals which weren't yearly.  A check was added for quarterly intervals to avoid unsetting `monthofyear` in that case and getting quarterly reports once every month.  The behavior should now be as expected.  Bumped version number accordingly.

Signed-off-by: Daniel Hunsaker <danhunsaker@gmail.com>