Fix title and description fallbacks for news and events

[fritzmg]

This PR fixes the following things for the News and Event Extractor:

• The extract…Description methods used description as the fallback. However, that field is only available in Contao 4.9+, but not in Contao 4.4. This PR uses the description field as the first fallback if present and otherwise generates the description from the teaser the same way as Contao does.
• The extract…Title methods only used the title/headline as the fallback. However, in Contao 4.9+ we also have the pageTitle field for news and events, which will be used for the meta information instead. This PR uses the pageTitle field as the first fallback if present and otherwise falls back to the title/headline.

I can undo the sorting of the use statements again if necessary (it's just my IDE that did it automatically).

[dmolineus]

I can undo the sorting of the use statements again if necessary (it's just my IDE that did it automatically).

Yes, pleas follow the coding standards which are checked by PHP Code Sniffer only so far. Just run vendor/bin/phpcs after a composer install. You might use vendor/bin/phpcbf to use the auto fix feature of phpcs.

[fritzmg]

Ah thank you, I was unfamiliar with how to use phpcs to auto-fix, will do 👍

[dmolineus]

Ah thank you, I was unfamiliar with how to use phpcs to auto-fix, will do +1

Yeah the naming is counter intuitive. Will use phpcq v2 when I'll find some time for it. :-)

[fritzmg]

PR is now updated with using TypeUtil::isStringWithContent both for the title and description for news and events.

[dmolineus]

Thanks @fritzmg