Fix broken cookie path within middleware. For some reason we used the
`/typo3/` path while storing cookies server side. But we used `/` in
JavaScript. That didn't play together and was fixed to always be `/` for
now, but it should be configurable in general. The fix revealed that the
detection of whether to store a cookie was broken, which was fixed
within the corresponding service.
Furthermore the dates how long the cookie should be stored was
different. We now always use 7 days.
We broke the registerPlugin() call by using lower cased version (the
extension key) instead of an UpperCamelCase version (the ExtensionName),
as opposed to the configurePlugin() call.
Both calls have to be in sync.
This is now adjusted and removes the need for a workaround to call
addTcaSelectItem().
Do not handle necessary processes ourself.
Instead use codeception extension.
Wrap strings in yaml to ensure they are not interpreted as something
else.
