The preferences page is accessible if a user opts into the Minerva
desktop experience. It's not a great first experience.
These changes make the page usable.
* Provide styling for tabs
* Provide padding/borders for unstyled button elements
Change-Id: I107ed3c685910a5e9502b25d22ef7cc489ce3c34
This is programmatic output from python3 scripts/migrate.py
This will result in a Minerva skin dependent on MobileFrontend.
Post merge we will rename message keys to have minerva- prefix
Bug: T166748
Change-Id: Iff1f7e63e796cc5d4a6d2ab0370e0c33248d2fce
jdlrobson