Tweak how scenes behave in generated lovelace

[balloob]

Breaking change

Proposed change

Fixes:

• If a card only has footer entities, show the entities as normal entities

• Cut off area name from the scene name
• Wrap the buttons if it doesn't fit on 1 line
• Pressing the scene will now activate it instead of toggling
• Add 8px padding left/right to avoid the buttons hugging the card

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:
• 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