Merge cross-team-ignore-other-projects [r=BjornT] [a=Chad Smith]
This branch allows the autosync configuration option to be tri-state:
"on" - sync any bug cards that don't have the no-sync marker
"active-projects" - sync any bug cards that are related to the INI configured projects
"off" - don't sync any bug cards unless "sync:" is in the title of the card
It lets multiple bug2cards ini configurations process the same board without having move collisions with other projects.