Resolved the CooperationStatus tooltip "no longer exists" and "No contact yet" in StoreList

What does this MR do?

1. If the status on the store list was set to "no longer exists", the tooltip showed "do not want to cooperate".
2. If the status on the store list was set to "No contact yet", the tooltip showed "Negotiations in progress".

How confident are you it won't break things if deployed?

(be honest!)

Links to related issues

• https://foodsharing.freshdesk.com/a/tickets/613
• https://yunity.slack.com/archives/CDFSR3Y4U/p1602530019001200

How to test

Steps a reviewer can take to verify that this MR does what it says it does e.g.

1. Checkout branch locally
2. Login as foodsaver
3. ...

Screenshots (if applicable)

Any relevant screenshots if this is a design / frontend change

Checklist

• added a test, or explain why one is not needed/possible...
• no unrelated changes
• asked someone for a code review
• set a "for:" label to indicate who will be affected by this change
• use "state:" labels to track this MR's state until it was beta tested
• added an entry to CHANGELOG.md
• add a short text that can be used in the release notes
• Once your MR has been merged, you are responsible to create a testing issue in Beta Testing Repo:
  • Consider writing a detailed description in German.
  • Describe in a few sentences, what should be tested from a user perspective.
  • Also mention different settings (e.g. different browsers, roles, ...). how this change can be tested.
  • Be aware, that also non technical people should understand.

Release notes text

• Wenn der Status auf der Betriebsliste auf "existiert nicht mehr" gesetzt wurde, zeigte der Tooltip "möchte nicht kooperieren" an.
• Wenn der Status auf der Betriebsliste auf "Es besteht noch kein Kontakt", zeigte die Tooltip "Verhandlungen laufen" an.

Dies wurde jeweils in den richtig Tooltip-Text korrigiert.

• Außerdem wurde im Dropdown-Menü zum Filtern vom Status "existiert nicht mehr" eingefügt.