[turba] Turba shares SQL table issue

[Kris von Mach]

Hello,

We found that "turba_shares" and "turba_shares_users" share_owner and  
user_uid were set to varchar(32) which is not long enough for some  
email addresses.

To fix need to adjust

varchar(32) to varchar(255) for
share_owner
user_uid

This applies to Turba, Kronolith, Mnemo, Nag, maybe more.

Found it in:

"kronolith_shares", "kronolith_shares_users", "mnemo_shares",  
"mnemo_shares_users", "nag_shares", "nag_shares_users",  
"turba_shares", and "turba_shares_users".