Correct bug that allows nodes to become abandoned if they are converted from a group back to a element. Update migrator to fix prior broken configs.
Added code to prevent user from closing GDI preview form.
Fixed preview image size on GDI preview
Added null checking to StringCount in Nutcracker. Was causing a fault.
- Intents passed to the preview are now passed with the Element as the dictionary key... This prevents a useless lookup later to get the element from the GUID.
Minor fixes
Fixed text rendering backward in Nutcracker grid
Removed passing of intents to the preview. The individual previews are now responsible for getting their own intents from the system.
Remove some crap from Nutcracker
More preview speed improvements
Changed a few Logging.Error to Logging.ErrorExecption to get stack trace logged in HardwareUpdateThread.cs (and a few other places).  Might help run down the problem Greg Scull is having with E131 output (he supplied an error log that had lots of exception from HardwareUpdateThread.cs but no stack traces were present).
More slight performance updates to the preview.
Merge remote-tracking branch 'remotes/jeffu231/master'
Merge remote-tracking branch 'remotes/derekbackus/master'
Merge bill's changes for updated error exception logging messages.
Various changes to implement IDisposable and modified graphics display
Merge branch 'master' of https://github.com/sall/vixen into sall-master
Merge branch 'sall-master'

Conflicts:
	Modules/Effect/Nutcracker/Nutcracker.cs
	Modules/Preview/VixenPreview/GDIPreview/GDIControl.cs
Merge pull request #34 from gizmohd/master

Merge from gizmohd/vixen