Allow editing post titles

[mratsim]

The previous forum allowed editing post headers. The current one cannot.

2 use-cases:

• Adding [Solved] to a thread like this one: https://forum.nim-lang.org/t/6049
• Changing version tag for a long-running thread like this one: https://forum.nim-lang.org/t/3029

[dom96]

Adding [Solved] to a thread like this one: https://forum.nim-lang.org/t/6049

That's already solved differently: each thread has a isSolved field. We just need logic to mark a thread as being solved (modifying titles for this is IMO a poor solution)

Changing version tag for a long-running thread like this one: https://forum.nim-lang.org/t/3029

I would create a new thread for this anyway, keeping a long running thread going like this shouldn't be encouraged.

I think we should still allow title changes, but they should be limited to the first few hours of a thread being created. Eventually it shouldn't be possible to edit thread's titles, or indeed the posts themselves.

[mratsim]

I would create a new thread for this anyway, keeping a long running thread going like this shouldn't be encouraged.

Why?

[dom96]

Because it discourages discussion. New threads are far more easily readable than bumping old threads constantly.

It also depends on the ability to modify titles which right now isn't possible and I would like to restrict it when we do make it possible (as modifying anything after a certain amount of time is asking for abuse).

[timotheecour]

We should allow users to change the title, and there should be no time restriction. Github issues can have their titles changed at any time, and I'm yet to see any abuse for this feature. Creating a new thread just because the old title was sub-optimal (too broad, not helpful, mis-spelt etc) only splits the context/discussion for no benefit.

Likewise with other community managed content, eg stackoverflow.

Lack of ability to edit titles is one of the main usability issues fo nim forum for me (alongside better search)