wrap all dextrity import, to allow using PAM without dexterity
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Unlock locked items before cuttoing; catch and log errors that occurr when pasting
only show the migration step for zc.relations catalog if the catalog util is present
use isDexterityInstalled instead of try-except
Merge pull request #29 from pysailor/master

Make it possible to run PAM without dexterity