GH-2022 Make radio button labels one line

[benstrumeyer]

• Have you followed the guidelines in CONTRIBUTING.md?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you added an explanation of what your changes do?
• Does your submission pass tests?
• Did you lint your code prior to submission?

• This PR addresses translation kickbacks on GH-2022 where the radio button labels should be on one line
• Radio buttons are used in the theme view for Plus subscribers and the Ad blocker lists view in Settings

Ticket: https://cliqztix.atlassian.net/browse/GH-2022

[wlycdgr]

LGTM