TODO.orbisvicis

Incorporate stringutils.Identifier serverside to validate user and game names
    superclass UniqueFilePasswordDB,UniqueNoPassword, providing name validation
Fix clientside bug introduced in 711fc517bf863503aa0fcadfba7c7c49a1ce3b26 - "Allow duplicate inactive game names":
    client assumes game in incorrect category, displays incorrect window
Complete Gtk3 port
    resume with gui.TurnTrack.py, awaiting Marker.py rewrite
        switch to Gtk3 "draw" signal
        redraw invalidated regions only (using Marker rewrite)
        simplify redrawing callbacks by using window_invalidate_region
Reintroduce python2 compatibility with six (module) and __future__ imports
    since twisted in python3 lacks the following modules:
        twisted.cred
        twisted.internet.utils
        twisted.spread
Rewrite Marker and similar classes (Chit,...?)
    Solve glyph width/height ratio problem (varies with scale/dpi)
Allow rescaling GUIMasterHex (proportionally)
Rewrite log window to match that of colossus'