Remove inline javascript to comply with some CSP

[mossroy]

Tested with dirtybiology_fr_all_2021-10.zim, dirtybiology_fr_all_2015-11.zim, and litterature-audiobooks-poetry_fr_2020-01.zim

Every page has the following inline script, that could be moved to a javascript file:

<script>$(document).ready(function() { trigger_webp_polyfill(); });</script>

And the drop-down list of the home page does not work because of its onchange attribute, that could be replaced by attaching an event handler on it (in a javascript file):

<select class="chosen-select" name="list" onchange="genplaylist()">...</select>

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[rgaudin]

Fixed via 5d468e3. Tested OK with Kiwix JS 3.4.0 extension in Chrome; which failed without the fix.

[mossroy]

Thanks!
Could you give us a link to a newly-generated ZIM file (when one is available)?

[rgaudin]

A new biologie-tout-compris_fr_all is scheduled but in the mean time, here's the test one I created test_yt5_2022-07.zim (16MB)

[rgaudin]

Here's a real one: https://mirror.download.kiwix.org/zim/videos/hygiene-mentale_fr_all_2022-08.zim

[mossroy]

It seems to work fine, thanks!