[Grav 1.7] Metadata template should not use escaping

[NicoHood]

https://github.com/getgrav/grav/blob/fdf884036da0c3b613be75e815eaebb6de015722/system/templates/partials/metadata.html.twig

When having a metadata of red & blue this is getting escaped twice with Grav 1.7. I guess this is done somewhere in the code and also via default escaping. What I am not sure about is, if only content must have a raw filter, or property, charset, name and http_equiv as well. Or if there is even a better fix.

[NicoHood]

I found another issue: Site metadata is not escaped, while page metadata is. This causes issues in my case, as I must handle those cases differently.

{{site.metadata.description}}<br>
{{page.metadata.description.content}}

If you ask me grav should not escape anything when processing the page metadata and the twig autoescaping functionality should handle the rest. Old themes should be fixed with the |e filter.

[mahagr]

No need to change anything. I made the method to automatically take care of whether to escape or not.

[NicoHood]

Nice, that works for me!