Added DayZ 2017

Hopefully github works now.
Update for v2 of 2017. Do not use with release 1.1!
(client update coming very soon; this is in preparation of it)

Also, do not use this in conjuction with any other mod in the same database! 2017 has to edit some stuff in the database which can cause other maps/mods to not work. Please keep mods/maps in seperate databases.