Bug 680131: Replace the MPL 1.1 license by the MPL 2.0 one in all files, and add it to files which miss one
r=kiko r=mkanat r=mrbball a=LpSolit

Bug 525606: Make the template_before_process hook run whenever a template is loaded (including PROCESS and INCLUDE), not just when $template->process is called.
Patch by Max Kanat-Alexander <mkanat@bugzilla.org> r=dkl, a=mkanat