Suggested by: Jim Thompson <jim@netgate.com>

While there, switch to the defaults when reloading the webgui.

I know, I know, backing up rrd and restoring it after reboot seems
like overkill, but the good thing is that if you ever decide to
install from a clean image the config import is able to pick up
your backups as well and you will not lose any history.

* Renamed pfsense-utils.inc to legacy.inc, which can cause issues
  on git auto-mount developer machines.  Be wary.

* Removed '/usr/local/www/' prefix from require statements that
  should never use absolute paths (unless you are never going to
  move files, but we already did...).

* Remove an unhealthy function that wrote arbitrary PHP files and then
  style checked them, twice.

* The usual license cleanups so that the headers are easy to read
  and actually make you want to see the rest of the file because of it.

* Code style, indent and obvious bug fix (missed unlock in return path).