ms9
Minor sample data fix
More re-saved assets
* Added a dedicated asset for cubemap textures * Need to duplicate some code, will clean that up later * Existing ezTextureAssets need a migration for two enum types: ezChannelMappingEnum -> ezTexture2DChannelMappingEnum ezTextureUsageEnum -> ezTexture2DUsageEnum Can be done manually (or with grepWin). I don't want to write a patch atm.