ignore tags and ruby-version files
update factory girls gem
refs #124: add conference user table to store roles
refs #124: convert to reviewer, coordinator, organizer roles to new 'crew' role
refs #124: add conference  role stuff
refs #124: remove fix missing person, should be a migration
refs #124: filter conference list for crew
refs #124: extract accesible conferences to helper
refs #124: wip assigning roles, limit to own crew/submitters
refs #124: rename is_role?
refs #124: orga user checks on allowed user objects
refs #124: start replacing manage with crud
refs #124: remove wildcards and classes without crud abilities
refs #124: move abilitiy comment
refs #124: event feedback ability check against custom subject
refs #124: refactor control -> administrate
refs #124: event rating ability now uses "crud @rating, but manage Rating" scheme
refs #124: checking event ability no longer uses manage
refs #124: update abilities (person, conference, callforpapers)
refs #124: fix tests for new abilities