Simplified menu handling in Default Plugin Palettes by introducing a
common superclass that handles the "Edit Color Palette" menu item.
First version of the Log ID list for the Default Plugin.

Only the class numbers, not yet the actual log events - will now add them.
Changed the logging system.
Added a log ID range for the Core.
Added filtering to the FilteredOutputLog.

(Not tested yet, as no one is logging right now.)
Added pushTimer() and popTimer() to the Log.
The Core creates and registers FilteredOutputLogs.
Implemented the TimeSpan.
Log IDs are now registered, FilteredOutputLog can close.
Added option to show or hide all ids in the FilteredOutputLog
Added logging in the DefaultPlugin for the Steadicam.