[mod] add markup option to overwrite system configuration (eg needed for OGP when site uses microdata)
[mod] add ow config to site extension view
Revert "Fix template options with query cache"

This reverts commit 33f795382f8e74aac6e8d6f8b554cfec9b0dde65.
Merge
Change fetched template options priorities
Fix fetched template options priorities
Revert "Change fetched template options priorities"

This reverts commit 15c9272394a9d97fe59b1ee3ae85d5cc39eebace.
Merge
[mod] insert options for lang and prefix attributes
Check for unset resourceUri
Make sitemap types configurable and order by dcTerms:modified.
Include selected language and POST array in cache ID

This allows us to create multilingual sites and also provide POST
answers on pages (e.g. for search)
Set .html as default extension of sitemap URLs.
Prepare HTML export in site controller.
Merge branch 'develop' into feature/cacheViewer

Conflicts:
	SiteController.php
Fix missing systemConfig in templates