Option to disable edits after some period of time

[andreynovikov]

Currently an author can edit her topic titles and comments forever. It's generally not good if the author edits something old as a comment can be quoted or replied, a topic can be shared or visually recognized by other users. However recent posts can be edited to review typos or add some facts.

That's why I propose to add some configurable threshold after which edits would be forbidden. 30 minutes would be reasonable default but administrator may set any other period, even 0 (zero).

[nitely]

It's generally not good, because most forums lack the edits history. Spirit has that, but maybe this could be a setting (off by default, because I don't like it).