Login.jsp - formatted code and moved around html elements.
	- script should be under <head>
	- TODO: create a script folder and have javascript outside of .jsp
pages and that they reference the scripts in some file
	- Only 1 generic login error - specific errors for username/pass is a
security flaw

Registration.jsp
	- Formatted code and organized
	- Removed extra html tags
	
Login.java
	- Moved login code to post. That is a post type action and should be
there and not in get
	- This checking of username/password was moved to Users.java as per the
specification
	- Removed unused code and unused imports
	- Only 1 error message. States "Incorrect username/password" by giving
whether it is a username or password, that is a major security flaw

Registration.java
	- Cleaned up methods
	- Moved check if user already exists to User class as the specification
states it should be

Users.java
	- Removed main method. A model class should not have a main method
	- Added checkUserCredentials() and checkUserExists()