Extension:WikiHiero/JSesh migration

Incompatibilities

 *  is treated by the old renderer like , however JSesh follows the standard and its output doesn't have the vertical bars on the sides.
 * H8W is missing, approximated with t\120:H8:Z2. Doesn't seem to be present at least on enwiki though.
 * N33B and N33C  are missing. The latter can be approximated with N33\60 though.
 * The signs N35-N35A-N35B-N35C</tt> look different.
 * V10A</tt> is missing.
 * Z98A</tt> is missing, doesn't seem to be used though.
 * V11A</tt> is wrong in the old renderer, JSesh's symbols are compliant with Unicode. V10A should be V11A, V11A should be V11B and V11C should be... present.