Replace page anchors with inner text at import

Removing them completely leads to missing content.
Import missing headers on pages

These headers are named anchors on the original site
and have previously been ignored at import.
Import missing headers in news posts

These headers are named anchors on the original site
and have previously been ignored at import.
Remove some news posts (zh_cn)

These posts do not show up in current imports of the site.
Correct layout of news posts (pt)
Import latest news posts (en, ja)
Update security page (en, ja)
Update ja/dev