Ability to turn preview of inline elements off

[mandynicole]

Users wary of NSFW content coming up, add in either preferences pane or show an icon at all times.

[takempf]

I figure preferences for each "module" ( chat, connections, users ) should be a available via a small button on the module ( probably the top right corner ) and come up in small modal. For now we can store these values in localStorage, but once we support accounts/sessions it should be stored there.