Add integration test for search and projector

[bastianjoel]

Our integration tests should check if all services work together.

Currently there are no tests that check if the projector and search service are working.
Therefore the following tests should be added:

Search service:

• Open global search dialog and search on orga level
  • verify that a result is present
  • verify that nothing is found for something not existing
• Open global search dialog and search on meeting level
  • verify that a result is present
  • verify that a result is not present that is not part of the meeting but exists

Projector

• Verify projector has content
• Verify projector content updates when sending a projection update