Log "delete from cache" actions, add store.pootle_path to unit log params, get cached last_action only when unit is deleting
Cleanup: PEP8 fixes
Set unit_id as last action attribute. Fix #38.
Use function name as parameter (not a function object). Fix #37.
Fix sync_stores error "Cannot compare datetime.datetime to int"
Cleanup: align variables vertically
Don't perform actions in the table if there's no table
Automatically display expanded stats if the user visits a store