* 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
- add B8 libary for SPAM protection
- add CSRF Token to form element
- created new table `akismet_rating`
- transfered `spam` and `spam_check_status` from entry table
- removed columns `spam` and `spam_check_status` as they are akismet specific columns from entry - - created b8 tables `b8_rating` and `b8_wordlist_table`
- changed SQL statements, which used the (old) `spam` column
- updated install-script
- changed phrases and flag someone for delete
- add B8 configuration to admin area
- clean code
- removed spam columns from backup procedure
- new tables are *NOT* included to the backup procedure because I prefer to remove this function
- added error message for wrong SQLs
- https://github.com/ilosuna/mylittleforum/issues/426
