* 10614: Add pre-commit hook for including the MPLv2
Adds to Python, JS, SCSS, Jinja HTML, Fluent templates and shell scripts
Note that the order of application of the hooks is important - we want to add a missing license before we check the formatting of files
* 10614: Update MPLv2 comments on all templates to match standard format produced by pre-commit hook
* Updates existing MPLv2 text to use a https URL
* Amend a handful of Fluent templates that used a token instead of the string "Mozilla" - this standardised things; translation was not used or needed
* Add missing MPLv2 where needed
* Update three tests that regressed with these changes, above
* 10614: Update pre-commit config to not add MPL to JS libraries; Remove MPL from the four files which should not have had it
Gives us a couple of new and improved things:
* Adds the new "immutable" Cache-Control header extension
* Uses whitenoise for dev so all of the files work
added a try except block to catch exceptions raised by the
HTTP GET on settings.REPS_ICAL_FEED. Log the exception or
the HTTP GET response error message and fail silently.
Craig Cook
Rob Hudson
Alex Gibson
Paul McLanahan
Steve Jalim
Paul McLanahan
Stephanie Hobson
alexgibson
Mainak
SujaySKumar
yglazko
Nikos Roussos
kenrick95
blisman