Update search, so it works with the new after syntax.

[InnocentBug]

Description

Updated search URL generation.
It now works with

Changes

Some updates to the paginator interface that enables partial searches, that allows interrupted searches for the SDK as well.

Known Issues

Many entries on stage are invalid.
So we had to work around this in the tests.
Ideally we don't have to do that.

@brili
I noticed, that BigSMILES search does not deliver 10 nodes by default. It is 1 node for me.

@brili
Also it appears that the after method returns some nodes multiple times.
I get the same UUID in the search results, I don't think that is as it should be.

Notes

Checklist

• My name is on the list of contributors (CONTRIBUTORS.md) in the pull request source branch.
• I have updated the documentation to reflect my changes.
• My code changes have been verified by automated tests and pass all relevant test scenarios.

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[brili]

@InnocentBug thanks for pointing out the dupes issue, its an easy fix.