Implemented allowing question number change in edit dialog. (Issue #66)

Changing the question number when editing an open question from the
workflow now reassigns the question number and changes all answers in
the queue. (Issue #66)

Fixed bug with changing answer status from correct to something else not
reopening question.
Corrected bug when loading saves.

Corrected a bug where loading a save where the correct answer in the
answer queue wasn't the last one submitted would not set the status of
the question properly.