* github-nickvergessen/ticket/12273: (55 commits)
[ticket/12273] Move $extension to constructor so the path is always set
[ticket/12273] Find events.md relative from the path not the phpbb root
[ticket/12273] Do not look in extensions docs/ and tests/ directory
[ticket/12273] Also check file for adm "Location:" events
[ticket/12273] Do not allow template events in non-html files
[ticket/12273] Fix return description
[ticket/12273] Update exporter to allow specifying an extension
[ticket/12273] Allow to filter events for extensions
[ticket/12273] Remove old parameter from function call
[ticket/12273] Fix table header for adm events
[ticket/12273] Add root path to recursive_event_filter_iterator
[ticket/12273] Fix missing classes in export_events_for_wiki.php
[ticket/12273] Use RecursiveDirectoryIterator with filter in php_exporter
[ticket/12273] Use RecursiveDirectoryIterator in md_exporter
[ticket/12273] Fix doc blocks
[ticket/12273] Do not allow 3.1-A1 for template events
[ticket/12273] Sort arguments alphabetically before exporting
[ticket/12273] Do not allow 3.1-A1 version
[ticket/12273] Update since version to 3.1.0-a* style
[ticket/12273] Update existing events
...
* paybas/ticket/12377:
[ticket/12377] Forgot to change the INCLUDEs
[ticket/12377] Renamed template files to navbar_xxx
[ticket/12377] Moved notifications to new template
[ticket/12377] Forgot empty line at the end
[ticket/12377] Move navbar(s) to new template file
* github-nickvergessen/ticket/12286:
[ticket/12286] Reword section about plurals
[ticket/12286] Fix spelling of elephant(s) in the sample
[ticket/12286] Correctly capitalize PHP
[ticket/12286] Fix nesting of ul inside li element
[ticket/12286] Add note that goto should not be used
[ticket/12286] Add section about plurals to the coding guidelines
[ticket/12286] Classes must use the name space
[ticket/12286] Remove section about utf8_normalize_nfc()
[ticket/12286] Use $request->variable() instead of request_var()
[ticket/12286] Function names should be prefixed with phpbb_
[ticket/12286] Add "Since" to template event docs
[ticket/12286] style.php and imagesets dont exist anymore
[ticket/12286] Styles have a phpbb_version and a style_version in 3.1
[ticket/12286] Use UTF8 (c) in style.cfg samples
Add viewtopic template events before/after the posts,
after the sorting options to allow adding contents to
respective places (like advertisement and so on).
PHPBB3-12217