Removed unused sound names

Fix #1542

This should fix #1542 (please test)

Minors Fixes for #1527

Changed problematic shortcuts

Moderator ban notifications + Server PM functionality

Ban based notification to other online moderators is the first form implemented by this PR.

readme / added license badge + link

remove debug code; fix #1520

shortcut text adjustments

- `|` over `/` to make `P/T` better readable
- Game play --> Gameplay
- Player - Playing Area

fixes #1520

Added chat history to a room that is displayed on join

With this update a new chat history definition is added on a per
room bases which allows operators to specify the number of chat
messages to store and present to the user on join.  Please see
the sample ini for room definitions.

Fix shortcuts detection on settings & game

Fix #1499, Fix #1493, Fix #1477
Fix typo

sound themes

This reverts commit 669568b9.

Themes: don't use hardcoded extensions on images

Fix server crash on banning

Fix library, grave, exile crash on windows

Reworked SoundEngine overhaul

Clamp zone view widget's titlebar inside the viewable area

Added the ability or moderation staff to request user ban history

fix settings icon spacing