If checked in - clients need to pole server for actual state

[davjand]

Should let the user know whether:

1. Checked in or checked out

2. Who has checked the database out / timing

3. Make check in/out interface colour coded and clearer. Currently hard to tell at a glance whether check in or out.

On Server

• green checked in
• orange checked out
• red current version not up to date

On client

• green checked in
• orange checked out
• red - checkout out by someone else