limit 1 building per planet; hopefully. Otherwise this will limit buildings to 1
Descriptions added for crafting

Tooltip will show descriptions for items now. Need to fix undefined
still.
fix for limit on buildings?
lowering craft cost temporarily
update the building panel properly now
Possible fix
Merge branch 'master' of github.com:antlong/multiverseminer

Conflicts:
	src/game/planet.js
Fix for buildings
another attempt to limit buildings
Maybe now..
Maybe now..
Maybe now..
Added pick power and mining speed to display.

Please read the TODO tags.
disenabling drag and drop again.