Changed check for username and password to server side instead of
client.
Cleanup LoginController.
Fixed some errors.
Removed Warnings (supressed).
Do not close program when closing register on X mark or cancel button.
Cleanup and Formating.
Testing that username and password still goes through
Added some more messages to FileHandler and ServerController
Added more console messages.
Updated .gitignore to ignore *.dat files
Added return value and append option to save method.
Added basic register functionallity
You can now register users and they will be added to the users.dat file.
More sanity checks should be in place later though. (and we need
encryption).
You can not login to the game aswell.