Automate the process of creating tilesets with tilemill

[Ben Wyss]

(an extension of Investigate using tilemill with command line: https://bugs.launchpad.net/oq-platform/+bug/1153958 )

Automate the process of creating tilesets with tilemill.
1. Work out the command line (flags/config/suport script & styling files) to run a tilemill job from the command line - ideally using a direct connection to a table in a postgres db.
    * A posible way to do with would be to create one tilemill project.mml and then monkey wrench the path to the current postgres table. In this senario we could also hack the interactivity.
2. Automatically place the MBtile file into the TileStream server directory
3. Create a mechanism to update the TileStreamSource.js/GXP.js plugin - this is the SDK plugin the is responsible to produce the list of available tile sets to GeoExplorer.
    * or - instead of trying to pipe each new map into geoExplorer, we may want to instead pipe all the map results into a custom url/base preview map.
4.Create a Django API that would be responsible for managing the tileset creation (oversee the authentication, max table size limit, execution of the tilmill job)
5. Create a UI dialog box to drive the API

[Ben Wyss (bmwyss)]

for some ideas see:
http://fuzzytolerance.info/blog/automating-tile-generation-with-tilemill/
http://flipside.org/notes/scripted-tilemill-exports/

[Ben Wyss (bmwyss)]

We are also looking into automation for GeoJson files see here: https://bugs.launchpad.net/oq-platform/+bug/1196949