Make the auth method label capitalization more consistent.

The authentication method labels ("Token generator", "Text Message", and
"Phone Call") have inconsistent capitalization. "Token generator" is
generally more correct, as it's going to appear in user-facing lists,
which are usually using sentence-casing.

"Text Message" and "Phone Call" have been changed to use sentence-casing
to match.
Make the "Back to profile" label consistent with other buttons.

The "Back to profile" button label has been changed to "Back to Profile"
in order to be consistent with other button title casings. Title Casing
is fairly standard for most button labels, except when in
full question/sentence format, and is a good fit for most sites. This
was the only button label not asking a question that wasn't consistent.