Merge DataHandler into PlayerHandler.

Revised the top comment block.
Added new comments.
Renamed and reworked functions.
Edit TimeHandler

- Edited the main comment block.
- Added comment blocks for all functions.
- Added Semicolons at the end of all statements.
- Moved the config variables from GLOBAL to here. Only _G variable is
time_of_day now.
- Various minor changes.
Rename TimeHandler.lua -> LightingHandler.lua
Edit all Global functions.

Changed the main comment block for each script.
Added semicolons to the end of all statements.
Edited whitespace.
Edit GLOBAL

- Changed main comment block.
- Added "Variables" and "Tables" sections.
- Added semicolons at the end of statements.
Edit PlayerHandler

- Added section for Data Persistence.
- Added semicolons to the end of statements.