Changes in submenu as of VC 20220216

As discussed in VC 20220216

• Removed sub-menu for "Cloud services"; replace by 1xOverview + 1xdirect link to portal
• Proposal on highlighting/introducing
  • Can we help you
  • AAI How-to
• Note: AAI How-to should have been added to FAQ as well, but it is already there (3rd point).

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👉 Review here

Closes #229 (closed)