Made new element "maptree" from nodetree scraps to replace old maps page.

Added warning for when the map tries to draw an entity that doesn't exist to prevent crashes.
Gave gui element type "text" heigh and width attributes so that it can be calculated on a generated list.
Removed debug prints from nodetree.
Merge branch 'master' of https://github.com/GoonHouse/Marin0SE