Version 2.0

- Implementation of login/registration features
- Implementation of custom location feature
- Added database setup file for initial database and table installation
- Created config file to store constants
- Change direct access of globals to use filter_input function
- Moved header and footer into seperate template files for easier re-use
- Overall improvements to error feedback
- Various styling and layout changes to accomodate new features
- Various JavaScript changes and tweaks to handle new features and
ensure continued functionality of existing ones
- Removed any unnecessary files
- General cleanup and maintenance of code