Fixed save/load crash introduced with life-sustained systems change.
Removed old unused code for transfer of entities.
Fixed crashes related to gamestate changes in certain orderings.
Merge pull request #178 from Revolutionary-Games/cleaning-up-transfer-system

Cleanup of entity transfer system and crash-fixes.
Fixed crashes related to gamestate changes in certain orderings. This fixes #162 and #163.
Merge branch 'master' of https://github.com/Revolutionary-Games/Thrive into 17-lua-console
Added basic console window, toggled by ` and currently doing nothing.