Updated ProjectBacklog to most recent edition
Organized the docs folder.

* Moved all mockups into docs/mockups
* Moved all sprint documents into docs/Sprints/sprintN
* Added a Wiki folder with an exported version of our wiki.
Clean up and organized imports of all files
Removed obsolete TODOs.

* Removed the big block of debug code from playerShipView.
* Removed the assertion for slice <= 0, didn't have much use.