Redmine uses journals to track changes to Issues. Whilst theoretically a
polymorphic association, there are a bunch of places where it is assumed
this is an issue, so we have to account for that and start patching
things.
Refs #3320
These will be used to show the amount logged against specific time
budgets on each project. It’s potentially a little naïve but we can
start with the simpler approach and see.
Refs #2165
Trevor Vallender