Shorten references to value
Use sequences for factory ids
Spec for marger service's use of Ticket#check_repeated_trello_ids
Add a factory for Trello cards
Spec naming tweak
Implement Ticket.check_repeated_trello_ids
Synchroniser updated outdated ticket from newer ticket
WIP: Prepare for merging
Apparently, it's best not to test scopes, but test what uses them
Add matched ticket updater
Add pending spec for tickets belonging to projects
Tickets belong to projects
Sort out namespacing