[MIN-249] Two ways to reach submaps and more compact submaps view

[Link to bug report|https://appunite.slack.com/archives/C068W173NFJ/p1705248484776809] Problem reported by Alexander The SUBMAPS button (and a tab?): Would there be two ways to reach submaps? Inside, the lines between submaps are not necessary, a more compact view would help.

Issue metadata

Issue type: Bug
Priority: Low