Right-align numeric fields

[1ec5]

#8769 changed the behavior of numeric fields to accept numbers in the user’s language instead of POSIX English. This is a significant change to users of some languages, who may have formed muscle memory around entering raw tag values in the non-raw field over many years. I believe even these users would be accustomed to entering numbers in their language in other Web applications, due to the prevalence of <input type="number">. However, we need to clue them into the fact that the behavior has suddenly changed.

Since we didn’t first prime the user by applying a monospaced font to numeric fields for a release or two, as suggested in #8769 (comment), how about right-aligning numeric fields? This is a common practice in UIs on many platforms, not to mention on calculators. It would make a clearer distinction between real numeric fields and those that happen to take numbers most of the time, a point that even confuses yours truly: #3615 (comment). That said, it would have little effect in right-to-left languages where the fields are already right-aligned.