readme adjustments

Add clientid field to sessions table.

Previous server connection history

remove max screen default

Add option to servatrice to disable replay storage.

Added lower case country code on correction.

Add script to validate/clear invalid country codes in the DB.

Removed clientid requirements from the protocol handler.

Revert "#1351 Fix"

#1351 Fix

This update address's the issue were a server with no db has only non-registered users but when creating a game will cause the dialogue to only allow the check box of "registered users only" resulting in a game that no user will ever be able to join.

Update Error 11 Clarity

Reg only server cleanup

Should fix #1336

Add database migration script for client id

Fix local game not starting properly.

Moved the RegOnlyRequirement functions out of the Database interface into the proper Server block of code.

Add more informative message on unrecognized login response

When logging in and receiving a reply that isn't understood, show a more informative error message.

`tr() + tr()` for better translation flexibility.

Commit to resolve requests made by @Daenyth discussed after the commit.

Merge branch 'clientid_commit_res' of ssh://github.com/woogerboy21/Cockatrice into clientid_commit_res

See https://github.com/Cockatrice/Cockatrice/pull/1340 for details.