Add "Write Protect" Option for sequence databases.

If a sequence databases is "protected" , the database should 
be visible with a different color and can not be selected.
in normal cases I would set most of my Sequence 
Databases to "protected" except the sequence databases 
I prepare for a dance. so I see only 4 sequence databases: 
short sequences , normal sequences , difficult sequences, etc.

The protected sequences should be not visible in the 
grid "Edit sequence database" , because the protected sequence are finished.
Have a checkbox to 'show protected databases'.

The protected sequences should be editable from a Dance. 
If I use a sequence at a dance (call from screen) it should 
be possible to add a comment in the Command area (e.g. (Check a Galaxy) ...)
Themann