Group export formats

[Jeremy Richard]

To visually group all video formats together and image formats together in the list of files formats we access when exporting, just as a visual aid when choosing the format we want.

Video

• AVI (DirectShow)
• AVI (Internal)
• MKV
• MOV
• MP4
• WebM

Image

• BMP
• CINEON
• DEEP
• DPX
• FLI
• GIF
• ILBM
• JPG
• PCX
• PDF
• PNG
• PSD
• SGI
• SOFTIMAGE
• SUNRASTER
• TGA
• TIFF
• VPB

And maybe having a list for "legacy" formats, for the ones that are here more for backward compatibility than contemporary use. But I guess that might be more of a subjective choice.