* B8
- prepare fies for new b8 version
* Update B8
- add new b8 classes
* Update b8.php
- modify spl_autoload_register function to prevent errors
- cf. https://gitlab.com/l3u/b8/-/merge_requests/1
- switching back to former b8 version
- there are some unsolved conflicts up to now (I don't know the reason yet)
- comment symbol # of former version is replaced by //
- tested on PHP7/8
- since PHP 5 doesn't support arrays in define(), the config files are invalid, see https://mylittleforum.net/forum/index.php?id=11912
- removed define() function call and used _normal_ arrays syntax
- created a single instance of B8 instead of using multiple instances (added new include file)