pfSense

• Fix dashboard thanks to Ermal
• Style fixes
• Move POST code to top of form. Why on earth would we want to invoke ajax calls when we are saving data?

Fix vlan_in_use function.

If we are an assigned vlan just reconfigure it after the editing.

DRY up the code a tad, download_file_with_progress_bar isn't related to
packages only anymore, move into pfsense-utils and allow for multiple
file write functions (firmware upgrades use a different one than our
standard)

fix another line break

fix line break (probably bad copy/paste)

code cleanup, does not resolve widget save bug

• Remount RO after unlinking file
• Only reinstall packages if platform is pfSense (full installation)

Tell write_config() the reason for the change.

Link GRE/GIF to the GUI.