Updated move destination widget to hide closed dossiers.
Fixed typo at workflow name in mock test.
PEP8.
Replaced hardcoded workflow names with constants.
Merge pull request #226 from 4teamwork/lk_prevent_move_closed_dossier

Updated move destination widget to hide closed dossiers.
Fixed reference-prefix upgrade step:

 - Fixed typo, which wrongly updates the repository instead the dossiers.
 - Fixed CleanupReferencePrefixMapping upgrade step: Make sure annotations are persistent all the way, and add check for persistence.
 - Fixed CleanupReferencePrefixMapping upgradestep: Updates now also the mapping on the repositoryroot objects.

Fixed CleanupReferencePrefixMapping upgradestep, which adds in_persistent data to the annoations.
Merge pull request #220 from 4teamwork/pg_fix_referencenumber_upgrade_step

Rebuild broken Reference-Prefix Upgrade-Step
remove commented code introduced with be77020

This check was uncommented for some time...
I don't think it's necessary to keep it around.

Original: d49d8c096cc7d4479839d4bee751c0a41512da0e
Comment: be770204e2de7ff71a958bb3661debb69c9841d8
Merge pull request #227 from 4teamwork/remove_commented_code

remove commented code introduced with be77020
Removed IMailInAddress behavior. Not needed any more with ftw.mail 2.0.
Provide an IntIdResolver adpater to generate Dossier Mail-In addresses

based on IntIds, and use it instead of the old implementation.
Removed og.mail IMailSettings registry interface (now done in ftw.mail).

Added upgrade step to migrate settings to ftw.mail's IMailSettings and
remove old og.mail IMailSettings.
Hide standard ftw.mail mail-in viewlet (we display the mail address in the byline).