[#68100124] [#68102696] delegation mails

Squashed commit of the following:

commit 0398383ffc707d52f564c8758d4cb4c444a4f6ed
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Wed Apr 16 12:47:01 2014 +0200

    reproduce generated persona dumps using REPRODUCE_DOMINA_EXECUTION_ID

commit 5521fd875d7ff2033074ea7bb944dc310bcd05c8
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Wed Apr 16 11:50:11 2014 +0200

    automatic generated persona dumps even when persona definition has been changed or DOMINA_EXECUTION_ID is given

commit 6b6c822a7fe34e5c4554488fca12c0ac2a48fbbc
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Wed Apr 16 11:31:10 2014 +0200

    automatic generated persona dumps

commit 2fc1f5b108536951301bd88dffaae1391bcd1a05
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Tue Apr 15 17:23:56 2014 +0200

    implementing tests for delegation mail

commit bc8bde2faacb734c533973920a7396d4257235af
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Tue Apr 15 14:29:36 2014 +0200

    adapt reminders to mail delegated users