LP#1693036: Simplify template, cleanup preview data

LP#1693036: Simplify template, cleanup preview data

This commit corrects a few minor problems, and also attempts to simplify
and cleanup the template. The changes include:

  - Adding the missing "ident_type2" field to the template and JS
  - Adding missing sample data for "county"
  - Moving "postal code" closer to the standard location (at the end of
    the address)
  - Fixing typos, and making "Claims..." labels more consistent
  - Minor cleanup of the sample data
  - Removing template comments that list available variables, because
    this template is simpler than most, intended to print everything

Signed-off-by: Remington Steed <rjs7@calvin.edu>