Remove unused files because.
Use location.url() because it's more complete.
Do not fetch lab_proxy if id is 0.
Better way to get user_id.
Fix help text.
Better urls data for API
Remove '_id' from POST for consistency.
Merge branch 'master' of https://github.com/kriwil/xblock-labster-lab into save_game
Add xblock handler for user save and remove previous one
Add xblock handler for error info