Updated system-page form, initial index rewrite

functions.inc - removed get_menu_messages; will be shown inline
notices.inc - replacing messages with menu-structure
fbegin.inc - whitespace changes for readability, integrated notices
fend.inc - added sticky footer
head.inc - added pfSense & glyphiconcs stylesheets
index.php - replaced widget logic with simpler panels. Configuration TBD
system.php - updated forms, now using horizontal layout