Refactor django-style management commands

All django-style management commands (/management/commands/.py) must be ported to commands/. Following modules should be refactored:

• dns/management/commands/import-zone
• gis/management/commands/dump-addr
• gis/management/commands/import-osm-data
• gis/management/commands/init-mapnik-map
• gis/management/commands/update-addr
• gis/management/commands/update-tilecache
• kb/management/commands/convert-moin
• main/management/commands/csv-export
• main/management/commands/csv-import
• main/management/commands/dump-crashinfo
• main/management/commands/gridvcs
• main/management/commands/job
• main/management/commands/newapp
• main/management/commands/pythonpath
• main/management/commands/sync-doc
• main/management/commands/sync-refbooks
• main/management/commands/sync
• main/management/commands/todos
• main/management/commands/user
• main/management/commands/wipe
• peer/management/commands/prefix-list