Comment 1 for bug 2021862

Here's a branch that removes the placeholders, places the help text below the input (though it falls first in the source order, for screen reader users' benefit), and cleans up the labeling and placement of the Translate button. Screenshot attached.
https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/sleary/lp2021862-fieldmapper-placeholders-hints