Replace strftime with Intl ICU. Fixes #3573

This uses a class that maps strftime placeholders to the appropriate ICU
patterns. I am using the fallback-intl branch here which provides an
English-only

Replace strftime with Intl ICU. Fixes #3573

This uses a class that maps strftime placeholders to the appropriate ICU
patterns. I am using the fallback-intl branch here which provides an
English-only fallback when the intl extension is not available.

Core has only two places where strftime is used: dformat() and the
SimplePie feed parser. Both are adjusted with this patch. For the latter
a custom Item class had to be registered. For better separation all our
FeedParser classes have been moved to the Feed namespace where our
FeedCreator classes already reside.

Note that this will currently be a degration for users without intl as
it will fall back to date and not to the still available strftime.

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Fix undefined array key warning

Fix style error

Use str_starts_with/str_ends_with

use $auth instanceof AuthPlugin instead of not null check

unused items, phpdocs

code style: line breaks

code style: operator spacing

code style: control structure fixes

code style: indent fixes

deprecate ptln()

This method was used to ensure some basic readability in the created
HTML sources long before Firebug and later the builtin inspector tools
in browsers pretty printed the HTML for y

deprecate ptln()

This method was used to ensure some basic readability in the created
HTML sources long before Firebug and later the builtin inspector tools
in browsers pretty printed the HTML for you. Today, this is no longer
needed.

This adds a custom rector rule to automatically change all occurances to
echo statements.

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coding style: control flow line breaks

coding style: control flow whitespaces

coding style: function call spacing

codestyle adjustments: function declaration braces/spaces

codestyle adjustments: function argument spacing

Apply rector fixes to the rest of inc

removed outdated version check

use samesite=Lax cookie attribute #2849

Since this has been the default in Chrome for a while, no sideeffects
are to be expected.

updated repo links

Don't send notifications if no save happend.

A page save might not actually save a new revision. For example when no
changes were detected or a plugin cancelled the saving action. In that
case no no

Don't send notifications if no save happend.

A page save might not actually save a new revision. For example when no
changes were detected or a plugin cancelled the saving action. In that
case no notifications should be sent and the cache does not need any
updates.

Fixes #3871

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Fix for PHP 8.1 Warning

I am running Dokuwiki Release 2022-07-31a "Igor" and I noticed the following variety of PHP logs generated:
[01-Feb-2023 07:21:37 Asia/Kolkata] PHP Warning: Undefined array

Fix for PHP 8.1 Warning

I am running Dokuwiki Release 2022-07-31a "Igor" and I noticed the following variety of PHP logs generated:
[01-Feb-2023 07:21:37 Asia/Kolkata] PHP Warning: Undefined array key "host" in /home/ekvastra/wiki.ekvastra.in/inc/common.php on line 1362

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avoid warning in formText when no text is given

Check if SE referrer url actually has a query part

Move IP functions into a class