The Nodes hath Returned

re-added the nodes after the previous rollback.
Floating Away

Added the floating menu for the map screen. First button hides the popup
menu, with 9 more potential actions via buttons. Floating form must be
enabled and set visible to be used; disabling it just gives extra
certainty it can't be clicked while invisible.
Merge branch 'master' of https://github.com/Psiryu/4000War