Refactorings and every action saves

Heavy functions were moved to the model. Furthermore every check in,
check out, export and delete will save it's data before the actual
action is executed.
Potentially unnecessary routes were commented out.
Last but not least rearrangement of index view is started
Time saved in hours now and list reordering works
Corrected parameter name
Improved error messages, finished sortables and added confirmation
message to destroy