Fix various supervisor tooltip and aria-label issues

[spacegaier]

Breaking change

Proposed change

Various translation attempted to use this.hass but that does not work for supervisor specific translations. Aligned the occurrences that I found.

Note: I don't have a supervisor dev instance => untested.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion: Unlabeled buttons #3267
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[spacegaier]

@ludeeus Ready for final review from my side.