Added new form (MainMenu.cs, MainMenu.Designer.cs);

Fixed Log-class, it can now log errors without throwing exceptions;
Cleaned up a little bit from TCPConnection.cs;
Removed private cache-file...
TCPConnection: More cleanups, commented some stuff

loginmenu: can now connect to remote server;
Made both forms border-free;

Added dragging-functionality for loginmenu;
Added "Exit"-button;
Pressing "Register" will bring out everything register-related;

Pressing "Close" will close everything related to registerform;
Renamed labels to more readable and understandable names;

Known bug:
It's a bit glitchy when pressing "Register", will fix whenever I know how...
Just some value changes for form-size;
MainMenu.cs: added Application.Exit();

loginmenu.cs: Started with registration part + login part