[Jobs] Adds property "contactEmail" to job entity

- Updates job interface
[Applications] Send confirm mail to job owner upon a successful application

* Creates new mail template "new-application-de"
Merge branch 'feature/confirmation_mail_upon_new_application' into develop
[Jobs] Fix: Call to undefined method "setContact"

Of course that must have been "setContactEmail".
[Applications] Uses the jobs' contactEmail as From address in invite and reject mails.
[Applications] Send receipt confirmation mail upon status change to "confirmed"

(refs #4663)
(#4652) digesting application-email-adress from AMS
Merge branch 'feature/Job-Add_field_emailApply' into develop
[Applications] Adds ability in HistoryBuilder to not reverse the collection array.

* Uses this feature in JsonHistoryBuilderFactory
[Core] Add parameter to saveData to allow forcing of inserts.
[Auth] Adds View Helper for accessing acl service in view scripts.
[Applications] Adds delete ability.
Merge branch 'feature/Applications-delete_entities' into develop
[Applications] Fix: Deleting of application does not work
[Applications] Adds replacement of spaces with underscores in file names when uploading

(refs #4683)
[Applications] changes from address in new application confirm mail.
[Core] Fix: Submit an empty file input throws error.

Empty file input fields are now ignored by FileCollection::bindValues()
Merge branch 'release/0.3b'