* Add announce message length to UI and make a cvar for it
* Update comm console server-side trim to use the cvar
* Rely on the new OnTextChanged event
Because OnKeyBindUp only works for keys that have binds
* Add a similar indicator to nukies' war declaration UI
* Remove message length indicators for now cuz it requires the engine update
* Rename cvar slightly
* Refactor duplicated code to a helper method
* Remove message trimming from *Window class as it's better to live in the BoundUserInterface where the other message handling happens
* Rename to chat.max_announcement_length
* adds prototype reload for AlertLevelSystem, reorganizes selectable alerts a bit
* makes alert levels not necessarily require localization
* oops
* sus
* does the same for announcements as well
* oh, that's not how that works at all
* ok, NOW it works
* fixes localization, adds event for when alerts are reloaded
* addresses review
