Update AAI tutorial

Some updates on the AAI tutorial.

• Removed outdated or (for the trying-to-login-via-AAI user irrelevant) information.
• More explicit information on ORCID etc login
• Reduce the role of the Events platform for this tutorial to avoid the misunderstanding that this is only about events

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• Review here versus old version
• Edit here

changed title from Update aai tutorial to Update AAI tutorial

changed the description

requested review from @lisa.klaffki

assigned to @jandt-desy

@lisa.klaffki, @SpickerHZB and/or @andreas.klotz please briefly check if this update makes sense.

approved this merge request

Thank you for taking care of it. Very good.

added 1 commit

• aabaf432 - add a formulation to clarify that not all services are necessarily in the portal (although most)

Compare with previous version

merged

mentioned in commit 83d1b7fa

mentioned in issue #401 (closed)

changed milestone to %Homepage updates until end of 2022.