rename variables

remove Ui\Diff::buildDiffHead()

refactor Diff with extendedRevisionInfo()

obsolete buildDiffHead()

translation update

define Ui\Revisions::getRevisions()

- new item property defined
- modified getObjRevInfo(), buildDiffHead()

translation update

allow instance when id is not identical with $INFO['id']

refactor buildDiffHead()

allow id is not identical with $INFO['id']

minor edits

use properties in showDiffViewSelector()

remove getDiffType()

new method setChangeLog()

change methods name

fix typo

identify current rev in html form

use PageDiff::compareWith() for draft, conflict

define preProcess() method

fix checkbox value for current page

similarify MediaDiff and PageDiff classes

move media_diff() into Ui\MediaDiff class

deprecated functions:
media_diff()
_media_file_diff()
media_file_diff()
media_image_diff()

Ui\Diff hierarchy

PHP 8: rename match() to apply() in Lexer #3298

Ui\Diff hierarchy

move Ui\Diff to Ui\PageDiff