David Radley

Hi @adinhtdsibm the idea is to remove all or most of the top level user interface content from the docs and move the content to under planning or the other...

@adinhtdsibm the SLT meeting today discussed UI documentation. We agreed that the top level UI concepts should stay at the top level. Then move the existing content as follows: I...

@mnuttall thank you very much for the review I will have a look.

@reswqa As discussed please could you merge

@flinkbot run azure

@reswqa junit errors in the pr build - I will investigate - update it is clean now.

@reswqa are you ok to merge this please?

> Sorry for the delay. The ci build seems also have some problem, would you mind taking a look? Thanks. @reswqa no worries - it looks clean now - LGTM...

> I think we should also including [4e6dbe2](https://github.com/apache/flink/commit/4e6dbe2d1a225a0d0e48fd0997c1f11317402e42). @reswqa Thank you so much for the quick reply. We do not currently use JAVA 17. Can I back port that separately...

@reswqa If you have strong views I can include it in this one.