Avoid usage of method="raw" in rules.xml

[thet]

In the rules.xml file, we currently have two method="raw" occurrences:

<replace css:theme-children="#mainnavigation" css:content-children="#portal-mainnavigation" method="raw" />

plonetheme.barceloneta/plonetheme/barceloneta/theme/rules.xml

Line 34 in cc9bc0c

<replace css:theme-children="#mainnavigation" css:content-children="#portal-mainnavigation" method="raw" />

and

<replace css:theme="#content-container" method="raw">

plonetheme.barceloneta/plonetheme/barceloneta/theme/rules.xml

Line 34 in cc9bc0c

<replace css:theme-children="#mainnavigation" css:content-children="#portal-mainnavigation" method="raw" />

method="raw" makes it impossible to modify the content before it's injected into the theme.

I think we don't need both and propose to remove them.

Or do we? /cc to @bloodbare @sneridagh @albertcasado because you might know why it was added.

Referring to: https://community.plone.org/t/adding-html-snippets-with-diazo/1554