[skip] fix problem with UnfuddleAdapter::Connection introduced by previous refactor
[fix] report errors with Unfuddle project configuration on the Kanban when queues can't be loaded
[improvement] combine tables in the Projects view, show "Category" in a column
[skip] fix UnfuddleAdapter::Connection so that it uses the right version of Ticket and isn't confused by Rails autoloading!
[feature] Added a concept of "prerequisites" to tickets
[refactor] move query-caching from Project to UnfuddleAdapter::Connection; now all query plans are cached
[feature] add due date to tickets
[skip] add id to rows showing tickets
[improvement] update Houston Scheduler module
[skip] fix prerequisite-parsing code