###

### Steps to reproduce

1. Login and open a work package with a relation

2. Go to Relations and remove it

3. Go to Overview tab and reload

4. Click on the date


### What is the buggy behavior?

* Automatic mode is still selected.

* Reload again = manual mode is selected but the banner with Ignore relations is still displayed and if you click on Show relations, it will lead you to the empty Relations tab. Go to Overview again and click on the date = finally the banner is gone


### What is the expected behavior?

1. Manual mode should be selected and banner should not show with Ignore relations and Show relations info which are irrelevant as there are no relations anymore.


Please look at the screen recording attached to this wp.

### Begin of the insertionImportant note

The issue also exists when a relation is added, not only removed so this needs to be fixed and tested as well.

###End of the insertion

### Environment information

**OpenProject version**

v.1.4.0-alpha (306)

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [x] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)