This wound up being a bigger commit than I had initially planned.
- New SC3k-style policies based on the advisor code.
- Added license file to Font Awesome folder.
- Refactored the advisor code so it can handle multiple files.
- Updated icons. Should be more consistent now.
- Replaced Sims with Animals in ticker text.
- Moved dialogs to windows directory.
- New tax system
- Advisor window modeled after SC3k's
- Advisor start_dialogue() function is now connected to a SimEvent "advisor_message" signal
- Advisor windows are now autoloaded and no longer part of the core interface node
- Added 3D buildings from Micropolis repo