Remove Status class

The Status class wasn't thread safe. Most code has been moved to
ProtocolStatus, with dispatcher calls to prevent data corruption.
Drop support for Visual Studio 2012

As Visual Studio 2013 has been released, VS2012 users are advised to
upgrade.
Remove config option displayOnOrOffAtCharlist

The code becomes messy with protocol >= 10.20, and calling
g_game.getPlayerByName from asio thread isn't safe.
Fix build error
Fix bug with account bans
Protocol version 10.21
Tweak connection flood threshold
Merge pull request #198 from dalkon/master

Market fix
Remove unused includes