* Created tools/anvil-clear-reboot to clear the "reboot needed" flag. Also created, but not yet using (and may not use) units/anvil-boot-time.service.
* Started work on having jobs show their data via JSON / jquery.
* Updated anvil-update-system to record messages indicating the progress so far.
Signed-off-by: Digimer <digimer@alteeve.ca>