Added INSERT statements to *.sql files. These statements will insert initial data into tables...

Also moved 'mysql.sql' and 'sqlite.sql' files from 'PhpRbac/src/PhpRbac/core/sql/' to 'PhpRbac/database/'.

This commit addresses Issue #24 and Issue #23.
Possible fix for Issue #11 and Issue #15...

* Removed bad check for 1024 chars using sql statements.
* Added check for 1024 chars using '$Path' length.
Added "SET SESSION group_concat_max_len = 1000000" query so we can get past the 1024 char limit of group_concat.

This commit addresses Issue #11 and Issue #15.
Created a simple GUI installation script...

* Users can navigate to 'path\to\PhpRbac\install.php' in their web browser, enter database credentials and click submit. The installer will then create a proper 'path\to\PhpRbac\database\database.config' file, create the requested database and tables if they do not exist, and then populate the database tables with the required initial data

* Includes minimal error checking
    * Makes sure all fields are populated
    * Makes sure the passwords match
Used "Pure CSS" to pertify GUI Installer.
Make changes to address Issue #17...

* Everything tests fine