Adding mulitprovider layer - lite that consumes buildings-lite
multiplying height by a 100 makes the building relatively taller and more distinguishable.
Merge branch 'slim' into places

Conflicts:
	tilestache.cfg
collapsing individual zoom level queries into groups of 1-3, 4-7 and 8-12. Updating the tilestache.cfg to use the new queries. (leaving a query zoom as null did not reuse the last defined zoom, so mentioning explicitly)