reformat code

add unittests for loading of defaults, extra defaults, local and protected settings

move resolvers into File namespace

added autoplural tests for PageResolver

added pageresolver tests for tilde+startpage behaviour

always use the same htmlspecialchars setup

defaults for htmlspecialchars change in PHP 8.1

All calls should always use our hsc() method to ensure comparability
(especially when testing)

Revert "Merge pull request #3039 from takuy/video-attributes"

This reverts commit 408d79f78505248f9ccb44bd2561cedc250ce5a1, reversing
changes made to b7c67f83bd81eff3186e4ebd2d9e86cd2c32468d.

Revert "fixed video attribute handling in php8"

This reverts commit f5cdab8ec90af0cde0c0e32209470cfa820b8ab5.

Revert "more php8 fixes for the video attributes"

This reverts commit 89e046c85b43365a46ce9f137a1b843d3ef6813b.

more php8 fixes for the video attributes

I defaulted back to null instead of an empty array.

fixed video attribute handling in php8

fix test for draft file

Update common_saveWikiText.test.php

allow 2nd to last revision check for normal save

update unittest checkChangeLogAfterNormalSave

add routine for "save on top of external edit" assertions

saveWikiText() unittest 5

5.1 create a page
5.2 external edit
5.3 edit and save
5.4 delete
5.5 create a page, second time
5.6 externally delete
5.7 create a page, third time

saveWikiText() unittest 3.3

second to last revision check after repeated external edit

saveWikiText() unittest 4

4.1 externally create a page
4.2 edit and save
4.3 externally edit (file older than last rev)

group assertions for saveWikiText()

removed wrong test

See
https://github.com/splitbrain/dokuwiki/pull/3272#issuecomment-966367900
for reasoning

fix fallback implementation for resolve_pageid()

When an empty link was given, the old implementation fell back to $ID,
this was handled incorrectly in the deprecated method.

simplify relative resolver and add tests

make resolveStartPage easier to understand

This dosn't really change the behaviour but makes the code easier to
grasp. A simple unit test has been added.

Update common_saveWikiText.test.php

getRevisions() may return empty array when changelog file does not yet exist.

rewrite unit test of saveWikiText

fix typo