Sync the left view if an anchor is used (BZ#8490)

[qx-bug-importer]

Alexander Steitz (@asteitz) wrote:

If the user is jumping into website API viewer with an anchor the right side (content view) is synced by scrolling into view.

However, the left side is not synced - "only" the right section is opened. If the user is jumping to e.g. the "tabs" widget (say the "addButton" method)

-> http://demo.qooxdoo.org/devel/website-api/#tabs.addButton

he is completely out of context, since the left side is not synced.