* Did not correctly redirect on finishing submission
* After that, finish_submission did not persist to database, that is why the .save call was added. New state is now saved correctly.

* fixed typos

* individual paper submitters can now reserve sessions for review, ureserve sessions, create and update reviews.

* Implemented strong separation of peer- and expert reviews/reservations
* To continue tomorrow: separate the abilites for reserve_event and free_from_reservation into reserve_event_as_expert and reserve_event_as_peer and free_from_expert_reservation and free_from_peer_reservation to have them as separate abilities since reviewer inherits abilities from submitter

* counter_cache of review_reservation_count on Event was not correctly updated, because event_rating did not delete the reservation with "destroy" but with delete. Fixed that.
* Added a rake-task to recalculate the counter-cache of review-reservations.

* Added "Co-Authors" to the tabs of non-special-sessions
* Make Co-Author adding work
* Fixed the buttons on the Co-Author-Submission-Tab
* Enabled editing and Deleting of Co-Authors for submitters.

* Added those deadlines to controller and view of cfp
* Adopted Paper-Submission-Wizard to reflect both session types
* Adopted Forms in the Wizard to reflect bot session types

**This is untested as of now. Will test now**