Added Employee Module
Added Holiday Module
Added Research Module
Revised Production Sale Module: More options and more flexibility
Fixed a bug where modules could be run on subdivision of the wrong type
Added all subdivision types to modules that should be added to them

- Added Technology Module
- Added Advertisment Module
- Buying equipment with the Equipment Module will now always go for the lowest price no matter what the heuristic says.
- Removed some unnecessary server calls in the Equipment module if nothing is bought or repaired.
- Fixed a bug where setting a policy to "Any Customer" in the Production Sale Module would set it to "No Sale".
- Fixed a bug where the Equipment Module would remove equipment if "Manage" was set to "Off".

- Fixed Icons