Rename existing GUI MainForm to make room for new one
Add new GUI MainForm
Upgrade Usurper to 0.23f
Some new icons for GUI
Update changelog
Fix hotkey input at menu screens

If caller dropped carrier, and exception was thrown when trying to
access the first character of an empty string
Add new history panel

This will show the connections that have taken place since GameSrv was
started (resets at each restart)