styled header, footer and some content styling

main.css - modified styles

header.php and footer.php - replace contents with styling from WP theme.

initialize.php - changed SITE_ROOT for my local dev. You should change it back to "ispectraignite.org/ispectra".

PP_templates.php - pull header/footer.php contents.

processGroup.php - missing semicolon

Registration.php - added button class, cleaned up layout.