This moves the gymnasion to p2 and lets the marines and cretan archers be trained there
Let the tech 'Iphicratean Reform' be researchable at the places where the units are trained (which is the irc the standard and you don't have to search for it)
TODO: I can't rename stuff, so if someone wants another name, this has to be done on commit
Also, one has to find another name first.