periodically remove old revsion table rows


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@11990 e27351fd-9f3e-4f54-a53b-843176b1656c
Disable ResponseCompression by default


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@11991 e27351fd-9f3e-4f54-a53b-843176b1656c
Pulled up r11991 from trunk.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@11992 e27351fd-9f3e-4f54-a53b-843176b1656c