Create upload_picture.php and Update signup.php

Attempts to allow the user to upload images when signing up.
Update HomePage.php

Add functionality and more buttons to the sidebar.
Update of all pages with a sidebar

Update of the sidebar on all of these files.  In addition: fixed calls
to loadgroup.php in group.0php
Update loadfriends.php

Fixed the queries to the database.
Update searchUsers.php

Added user picture to the result of the search.
Create logout.php

Allows users to end session and logout of the website.
Update loadgroup.php and makegroup.php

Fixed the queries to the database and added the $!/usr/local/bin/php to
the beginning of the files.