Switch everything over to using new buildings and floorimages tables
that I added to the DB. See revision 1.251 of sql/database-create.sql. I have removed all of the hardwired names of buildings, images, files, etc. I have also added MEB floors 1 and 2, but they do not show up on the status page unlesss there are actually nodes assigned to them. When you go to set a node location, you do see the little thumbs of all existing buildings/floors, so you can add nodes to floors that do not currently have any. Still needs some work to cleanly display multiple buildings, but thats for another day.