Update Power App to support other environment languages

[larslynch]

If your PowerApps environment is configured in another language, the Request-a-Team PowerApp won't work correctly on the "My Requests" and "Approve Requests" screens due to a mismatch between the PowerApp searching for the English language display names of the SharePoint columns and SharePoint online returning the current language display names.

The simple fix is to follow SharePoint dev best-practice for referencing columns in the PowerApp:

1. Replace all occurrences of 'Team Name' (the English language display name) with 'Title' (the invariant internal column name)
2. Replace all occurrences of 'Created by' (the English language display name) with 'Author' (the invariant internal column name)

[Humpeklumpen]

Thank you @larslynch! This has been bugging me!

[alexc-MSFT]

Thanks @larslynch for this one. I will add this to our internal backlog.