Server/PacketIO: Sending SMSG_SET_DUNGEON_DIFFICULTY After Recv CMSG_SET_DUNGEON_DIFFICULTY When Not In Group.
*Now u should be able to change Difficulty even if u not in Group.

Signed-off-by: AriDEV <aridev666@gmail.com>
CMAKE: Update windows build depenancy to VS2013"vs12" only. This will be the only windows compiler supported.
Ported from Trinitycore from various authors.

Signed-off-by: SkyFire <admin@projectskyfire.org>
Merge branch 'master' of https://github.com/ProjectSkyfire/SkyFire_5xx into account_bind