commit c824052df0caaa7cef5542458b2618e2d104c549
Author: dankert 
Date:   Mon Dec 6 01:00:00 2021 +0100

    New: Show a version from file history; New: Text history.

 modules/cms/action/file/FileShowAction.class.php   |  27 +++-
 .../cms/action/image/ImagePreviewAction.class.php  |  22 ++-
 .../pageelement/PageelementDiffAction.class.php    |   4 +-
 modules/cms/action/text/TextDiffAction.class.php   |  18 +--
 modules/cms/action/text/TextValueAction.class.php  |   3 +-
 modules/cms/generator/FileContext.class.php        |   3 +-
 modules/cms/generator/FileHistoryContext.class.php |  49 ++++++
 .../cms/generator/FileHistoryGenerator.class.php   | 132 ++++++++++++++++
 modules/cms/model/File.class.php                   |  17 +-
 .../ui/themes/default/html/views/image/history.php |  11 +-
 .../default/html/views/image/history.tpl.src.xml   |  11 +-
 .../ui/themes/default/html/views/text/history.php  | 175 ++++++++++-----------
 .../default/html/views/text/history.tpl.src.xml    | 166 +++++++++----------
 .../ui/themes/default/html/views/text/value.php    |  43 ++++-
 .../default/html/views/text/value.tpl.src.xml      |  13 +-
 15 files changed, 456 insertions(+), 238 deletions(-)