Comment 2 for bug 1519516

I wrote up a quick patch for this: https://reviews.mahara.org/#/c/5767/

But the results weren't really "fixed". The upgrade ran fine (I did it from the CLI; didn't try the web-based upgrader), but the CSS on the site was 90% broken. It looks like this is because the old theme "static/style" directories were still there, and the Theme code checks in that location before checking for the new base "style" directory where the real theme files were. So I had 15.10 HTML, with 15.04 CSS, and few of the styles matched up and worked correctly.

Ignoring that, I logged in anyway and went to the admin screen. There, the upgrader asked me to upgrade the multirecipient module, and install the multirecipient artefact! Which, of course it would, because we essentially uninstall the multirecipient artefact during upgrade, but since its files are still in place, that prompts Mahara to ask you to re-install it.

So I'm abandoning that patch because it doesn't really solve the problem and may, in fact, cause more problems.

I'll see about making sure the upgrade documentation is correct, instead.