+ Fixes `type` of `content` and `summary` entries
- Removes `script` and `iframe` tags from entries content (from JSON feed too)
There is actually an issue with Jekyll when using `capture` and incremental build.
It was actually not related to `highlighter` config entry, so `f17a8ff3` has been partly reverted.
An issue has been opened upstream ([jekyll/jekyll#8062]).
From now, incremental build will be disabled.