Increase zoom level to grump mbtile layer

[Ben Wyss]

On the "hope" server we have a tilemill project set up for the grump population layer. For this taks one needs to open this project, and modify the zoom level. The zoom level should allow the user to begin to see individual pixels of the data.

[Ben Wyss (bmwyss)]

before running tilemil please check that hope is not occupied with other tasks.

[Ben Wyss (bmwyss)]

we how now produced a global MBTile set for the grump data at zoom level 7 and 9:

                                 7 | 9
                              ---------------
compile time 20' | 3.5h

tile set size 88mb | 780mb

[Ben Wyss (bmwyss)]

this feature is no longer needed