Merge pull request #26 from parnelandr/legend

dots in legend
Merge pull request #27 from parnelandr/legend

without the spaces
Issue 8: revised cause-decoder.csv for known typos.
More typos in cause-decoder.py
Added worldCopyJump and continuousWorld options to enable easier access to accidents on the Chatham Islands. Not ideal, but at least they can be found.
Added controls box and style, and a title parameter for the arrow, based on user feedback.
tidied control-box