Feature request: block user

[pmonks]

thecrag should provide a "block user" function. The way I'd envisage this working is that that blockee would not be able to see the blocker's non-index related content (comments, ascents, potentially photos though that may get tricky with topos and webcovers etc.), and vice-versa.

This is a pretty standard feature for systems that offer any kind of "social media" functions (e.g. forums, public & private messaging, etc.), and is important in allowing people to quickly respond to abusive users of the platform, without requiring (potentially slow) administrator involvement.