Ticket #1666: fix paragraph formatting.

1st line was shifted after paragraph format.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Rename src/editor/{wordproc.c => format.c}.
Merge branch '1666_paragraph_format_1st_line'

* 1666_paragraph_format_1st_line:
  Rename src/editor/{wordproc.c => format.c}.
  Ticket #1666: fix paragraph formatting.