Merge pull request #106 from GeoDodo/master

add requirement.txt to install modules with pip
Added imposm.parser

Required for OpenStreetMap data import
Sample gunicorn configuration
nginx sample config
Bad ending
nginx sample config
Fix for #110
Kleiner Lapsus?

wanted_nodes wird hier nicht verändert. Sollte es? So macht das
jedenfalsl keinen Sinn.
First attempt for monitored sub-processes via threads
Path fix (config not found) added
Command line option --timeout added for additional control
Sample configuration for nginx
Sample configuration for Supervisor
Fix for query cursor timeout
Timeout-fix
Bugfix: wrong attributed deleted from document
Fix for #115
Fix for #111
Now also updates documents which have been previously processed
Fix for submissions without attachments