fix contao 3 template groups
Merge pull request #399 from backbone87/fix/template-groups

fix contao 3 template groups
Change the handling for meta title and meta description. Now the system tries to find a entry with a valid text instead of using the first entry.
Updated translations from transifex.
Updated translations from transifex.
Merge branch 'master' into dev
Merge branch 'dev' into contao3

Conflicts:
	src/system/modules/metamodels/MetaModels/ItemList.php
Merge branch 'contao3' into tng

Conflicts:
	src/system/modules/metamodels/MetaModels/Dca/Helper.php
	src/system/modules/metamodels/MetaModels/ItemList.php