Automatic packaging and sending to on-line catalogue of saved catalogue parts.

Given the fact a user agrees to the Community Catalogue terms and conditions, SkyCAD will store file paths of saved parts in order for SkyCAD to automatically package them and send them to the server.

To be included in the list of files to be packaged, a part will need to comply with the following rules:

- Has a description

- Has a manufacturer

- Has a layout view.  (Except for some classes for which layout views don't make sense, such as cable, for example.  Exact list to be defined.)

- Have an image defined if no layout is defined.

Any part that follow these criterias will be automatically packaged and uploaded to the server provided that it has not been saved in the last 5 days.  (Most parts are modified often after their creation, thus waiting for 5 days assumes the user considers the part to corresponds to specifications.)

Also, only property Definitions of class specific to exported part should be exported.  (This to avoid generic property definition created at higher level classes, such as 'internal part-number' a user may have created.)