Manual Saving and iOS and Chrome Fixes

Added in a manual import/export save button to the main menu and settings menu for iOS users. Also recommended for all players to occasionally save a back up just in case. This is my first game and its still a test version so this should prevent any more serious progress loss in the future. Sorry to anyone who lost their fleet and crew :(

If you are still having issues on desktop please let me know, I'm trying to narrow down the problem and I believe its certain browsers being to strict with their privacy settings.

1. Go to your Browser Settings > Privacy and Security.
2. Ensure "Third-Party Cookies" are allowed (or add an exception for itch.io).

In the meantime, please use the import/ export button to keep a manual backup code just in case!

I also added in a new tier of contracts before common called coastal to prevent new players with no sail upgrades from having to idle the first 5 -6 mins they start a save. 

You should also be able to close all windows using the esc key now.