Fix-Ticket: 'Back' button is not linked correctly

[Diana2402]

If you click on one of the existing groups from the main menu (to get more information) and you want to go back later (with the 'back' button), you will get to the 'my group' page instead of the home page. And if you press the 'back' button again you will get to the profile page. You will not get back to the main menu.

The following must be decided:

• [x] Either leave the link "homepage --> choose one group --> my groups --> profile page" or
• [ ] Change to "homepage --> choose one group --> homepage".

[Diana2402]

Here you can see the screenshot as soon as you select an existing group and want to go back from there:

[Diana2402]

The link stays like this for now, because the functionality should point to the page 'my groups'.

• [x] The ticket has been successfully tested.
• [x] There were no bugs in the app.

The ticket was tested by me (Diana).