Blender Git Loki

=== Script Update: UV Export ===

Updated the interface to use PupBlock and the FileSelector instead of drawing a full GUI
Fix a crash when no objects were selected and the Ob option was activated
Added option to edit the resulting image in an external program (this needs a full python distro for the os module. it detects the presence of the module and shows the option only if possible).
Saves the selected settings (except the save path) with Registry, so they get loaded back next time you use the script.