Fix some phpstan issues
Remove assert
Fix: #4384, Fix: #3580 - add support for google-analytics V4
CodeStyle
Outdated bootstrap markup
Bootstrap5 needs explicit spacing between form rows
CodeStyle: use JSON_THROW_ON_ERROR with json_encode()
Upgrade Bootstrap from 4 to 5. Fixes: #3673. Fixes: #3400.
Apply PSR12 code style to templates
Remove confusing help text
Move analytics settings to the module settings