Moved config into $GLOBALS
Moved request_uri into $GLOBALS
Modified all files accordingly
Modified logout page for future improvements (not deleting the entire $_SESSION)
Fixed LICENSEs, moved LICENSE for PHP files in /lib/php subfolder instead of /lib
Moved database function in class "Database";
Corrected database-using webpages accordingly;
Moved config file from PHP to JSON with more config variables;
Corrected login page redirection on wrong username or password.
Renamed "includes" to "templates"
Added .htaccess to redirect requests to index.php
Added function to split request URL into array
Corrected locations in scripts and pages
