remove test_metadata.py - as far as I can tell, it only tested itself
add "grids" key to meta api tests
add (empty) "grids" key to meta endpoint
add test for grid content in meta endpoint
use singular "grid" to match singular "table" in meta output
forgot to save grids to _grids table
add grids to meta endpoint output
Merge pull request #6 from scraperwiki/meta-endpoint-grids

Show _grids in meta endpoint