Prevent users from submitting content with ELGG in all caps

[ewinslow]

This is a really annoying habit that some people have. Warning them by saying, "You should only capitalize the first letter of Elgg," would be a nice nudge. Or else just do this processing for them automatically.

[Srokap]

While doing that we could ban titles with most of their letters being capital ones. Just would be cool to do it as well while doing this ticket anyway.

[brettp]

+1 to both. A quick and extensible way would be to create a map of regexp to replace on save.