pfSense

Some more tweaks to state and mbuf update/output on dashboard widget.

Add a meter for states, too

Fixup mbuf stats function

Make mbufs update via ajax

Fix an occasional "blank" cpu freq printing that shouldn't happen.

Use exec directly instead of exec_command

Fix and improve swap_usage()

- Fix a typo on awk syntax
- Use php functions to extract desired value from swapinfo output

Fix indent and whitespaces

Tidy up HTML Colour Names

With XHTML 1.0, the extended colour names are invalid, to make pfSense
as W3C compliant as possible, need to go back to using the HEX code.

Some minor enhancements from renaming the Gathering Data to Pending.
When it doesn't exist in the array it's really unknown. Make that lightblue. show a ~