Feature/4291/file upload

Adds the local file upload in mapfishapp. See http://forge.applis-bretagne.fr/issues/4291.

Some work remains:
* files in EPSG:3857 projection are shifted 30 km to the north
* with GeoTools, lat and lon are inverted
* with GDAL, rounding error for the MIF files

The report is available at: https://docs.google.com/spreadsheet/ccc?key=0AuUz-T2R7pgadEpla0NHdjc5d3VFem5Nd255LVExNkE#gid=0