Fixed issues with new ent hooks. Merged into Game module.

- Fixed ent datatable req check skipping first table.
- Fixed crashing due to invalidated js func in hook callback.
- Added a missing instruction line in comment about adding new ent hook types.
- Fixed crash on load due to incorrect SM LoadGameConfigFile function doc.
- Renamed hooks js object to entHookTypes.
Merge pull request #6 from psychonic/enthooks2

Fixed issues with new ent hooks. Merged into Game module.