Fix i18n build

Fix i18n build

Two problems thrown at the i18n build:

  * $$ quoting is not understood by db-seed-i18n.py; simple approach is
    to use standard single-quote escaping of the single-quote in
    950.data.seed-values.sql (warning: this might lead to other problems
    with the regular expression in db-seed-i18n.py)
  * authority.js includes Unicode values (shock!) and so we must treat
    the incoming strings as unicode() instead of plain old str()

Signed-off-by: Dan Scott <dscott@laurentian.ca>