mail/roundcube-thunderbird_labels: Upgrade version 0.8.1 => 1.0.0 and stage
Also assign maintainership to submitter who was former maintainer.
The MASTER_SITES has moved to Google Drive.
Submitted by: Alexander Moisseev
Thunderbird Labels plugin for RoundCube webmail.
Displays the message rows using the same colors as Thunderbird does.
Label of a message can be changed/set exactly like in Thunderbird.
Submitted by: Alexander Moisseev <email@example.com>