Reason: We tried to check whether the region supports environment settings
without making sure that we've actually recieved region capabilities,
so the check sometimes failed.
Fix: Defer check for the "EnvironmentSettings" capability until we've received the region capabilities.
Changes:
* Fixed incorrect way to pass parameters to notifications.
* Fixed crashes in the Advanced Sky floater and the Region Terrain panel.
* Fixed initialization and multiple instantiation of the Day Cycle floater
(that might lead to incorrect behavior).
* Fixed and re-enabled committing env. settings changes to region.
* Fixed day cycle and sky settings being sent as empty arrays and therefore not passing validation on server.
It is now possible to change region environment settings.
* Added debug messages.
Lots of cleanup in the floater classes. Not sure every decision was correct
but it compiles now. Doesn't link yet.
(resubmitted by Vadim ProductEngine)
Oz Linden