handle tickets for sprint 10 closing

prevent displaying non-board member data
limit member statistics from date in_position_since
fix issue in upcoming meeting template
fix issue of re-publishing agenda to part of the community
Merge remote-tracking branch 'pwalsh/master'
changed field in_position_since so it will appear in the admin
Merge remote-tracking branch 'pwalsh/master'
additions & fixes to sprint 10
fixed meeting_participation() to limit to the 'current' community
fixed previous fix... <meeting__>community
Merge branch 'master' of https://github.com/amir99/OpenCommunity