This adds an event to dbg_deprecated(). This allows plugins to handle
deprecation warnings. One example would be @cosmocode/dokuwiki-plugin-sentry

One thing I don't like, but don't know how to avaoid is that this
function used to abort super early when $conf['allowdebug'] wasn't set.

However for the sentry plugin you probably would want logs, but still do
not show any debugging to end users (which allow debug would do).

So now the backtrace is always built, the event triggered and then
everything is sent to dbglog() which may simply throw everything away.

Suggestions on how to improve this welcome.

Add call to delete Users to the remote API

These shouldn't be there anymore since the plugins have been deleted

Translation update (de)

PHP brekas URLs by moving old releases into an archive folder. Since we
cannot be bothered to update these tests everyday, versions have now be
adjusted to be slightly older to always go to the archive download.

use more general phpunit versions

Appveyor seems to have problems with redirects by php sometimes

Fix for Issue#1250 Footnotes break metadata abstract saving

New event for trimming recent changes and refactor lib/exe/indexer.php

Translation update (cs)

Translation update (it)

Translation update (ro)

The matches our scheme of where_data_what better

Translation update (ja)

authmysql and authpgsql were replaced by authpdo two releases ago.

fixed typos

Looks like the domain we used to test this on expired.

Translation update (ru)

Update PHP logo URL to HTTPS

- solves mixed content warnings on web security analyzers
- saves time since http://php.net/images/php.gif will redirect to https://secure.php.net/images/php.gif anyway.

The actual draft text got lost when we changed to showing the diff
instead of the full draft.