Add icons when adding integration

[balloob]

Breaking change

Proposed change

So I went to add pictures to the add integration screen.

Realized that the search input had margin built-in, which was weird, and also took that one out and added it back everywhere it was used.

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:
• 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

[frenck]

Use the URL without the underscore, because it is now falling back to placeholders

[balloob]

That was on purpose :)