Added categorizing to images and binary files, and location to images
- Operation core for exports initially with Ziping

- splitting TheBall namespace to accessable and system parts
Added TheBall.Interface domain for web request separation from TheBall.CORE
Updated item field level collection declaration support.
Updated the models for status tracking
Synced with submodule update
First implementation of status-updates on back end: TOO HEAVY!
First version of statussummary-updating (on web server side) implemented.
Added modification status (N, M, D) to status update entries
Fixed re-invitation to group to work