Ticket #3245: mcviewer: make goto line 1-based instead of 0-based.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
mcviewer: remove "(decimal)" from "Line number (decimal)" label.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Merge branch '3245_viwer_goto_line'

* 3245_viwer_goto_line:
  mcviewer: remove "(decimal)" from "Line number (decimal)" label.
  Ticket #3245: mcviewer: make goto line 1-based instead of 0-based.