Bugfix: select other roles when sending data

[timoKroecker]

User story

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As a user, I would like to be able to select other connector that I want to send data to.

Acceptance Criteria

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• When I click the button to send data, I could select other connector / role via a drop down menu.
• When I select the desired connector, the backend should send the data to said connector.

DoD General Criteria

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• Solution has been merged into the main branch
• All tests passed
• Acceptance Criteria is met.