* Convert and add portals and learn wiki .less to .scss
* Convert learn wiki to BS5 and update search JS
* Convert portals to BS5
* Move gallery page padding to seperate class, to avoid forcing padding to the gallery included on portal pages
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Co-authored-by: Rebeka Dekany <50901361+rebekadekany@users.noreply.github.com>
GitOrigin-RevId: 3a93d56280ccdcf7fb1837511a3efe54b2efd428