Fixes #2244 PK-Analysis for multiple administration corrupted

[rwmcintosh]

Fixes #2244

Description

The location of the applications container has changed. I think we have to look in two places now for applications

Type of change

Please mark relevant options with an x in the brackets.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires documentation changes (link at least one user or developer documentation issue):
• Algorithm update - updates algorithm documentation/questions/answers etc.
• Other (please describe):

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Integration tests
• Unit tests
• Manual tests
• No tests required

Reviewer checklist

Mark everything that needs to be checked before merging the PR.

• Check if the code is well documented
• Check if the behavior is what is expected
• Check if the code is well tested
• Check if the code is readable and well formatted
• Additional checks (document below if any)
• Check if documentation update issue(s) are created if the option This change requires a documentation update above is selected

Screenshots (if appropriate):

Questions (if appropriate):

I'm unsure on the best implementation. The PR is just for discussion until then.

[rwmcintosh]

So, yeah, for now, I just combined the two known locations where we might find applications.

[rwmcintosh]

Try to remove the knowledge of container name by getting all children of type eventgroup. Check that this method is called sparingly.

[rwmcintosh]

Or maybe the 'Events' container should be of type 'EventGroup' instead of other