Media Index display settings

[Alpha1]

Please consider to add settings for XFMG media index:

• Display Album media Y/N
• Category chooser (display media from specific categories)
• Display Media Types: Image, Video, Embeds
• Prefixes (assuming prefixes will be implemented)

With such settings we would have the tools to display a relevant media index. Currently our media index is always littered with cat gifs, a mass of irrelevant media and NSFW. Instead I would like to have the media index only show media that is relevant to my niche.