Added Buttons and mainPanel. Program allows you to log in and out. For the moment, the only validation required to log in is that the username and password fields aren't empty. on log in, the username is stored in "ActiveUserData" which is static and should only be looked at client-side. The username is displayed in the main panel when logged in. No ability to create an account yet. Formatting is just temporary, proper spacing and niceness-making will be done once the basic code is functional.
Merge branch 'master' of https://github.com/nsalerni/CPS406-Iteration-2

Conflicts:
	bin/Main.class