Changes event data structure
Adds work package event properties
Fills user/project references with one query
Adds provider reference to event
Moves work package  activity provider settings
Moves changeset activity provider settings
Moves news activity provider settings
Moves wiki content activity provider settings
Moves message activity provider settings
Adds helper method
Moves time entry activity provider settings
Activates new activity provider
Removes activity code from AAJ
Sets event type automatically
Removes superfluous event properties
Handles nil projects
Corrects previous/next label
Returns table with project reference
Filters events by projects
Simplifies censor method