Code cleanup. Removed code and files.

Got rid of href for user sign up and removed any code related to doing
user signups since it will be handled manually.
Removed more SQL code related to create user.

Removed statement from insert to creating users since that will be all
manual.
Removed files not longer needed.
Removed sessions code and started validation.
Continuation work on sessions and validation.

Added and changed a couple of files for sessions and validation for
users.
Revamped validation and sessions.

CSS was completely revamped, sessions are added not sure if they are
working. Ran into an error with no database selected for SQL although
information is right in connect.php and verified in PHP MyAdmin.
Merge pull request #2 from jsingh214/user-validation

User validation