MDL-32444 theme_afterburner: adds 5px margin to the left of #loginbtn, input, button, select in /style/afterburner_styles.css

The signature of mod_workshop_mod_form::validation() is now compatible
with that of moodleform_mod::validation() even though the parent's
declaration sucks. No one can choose their parents.

Based on http://commons.wikimedia.org/wiki/File:Appointment-new.svg
(public domain Tango! Desktop Project icon)