Added threshold line colors for the new orangered color

Orangered has replace yellow in lizard-map as HHNK wants that.
Allowing more than 3 results when they're all in the same location as the
closest result.
Updated changelog
cleanup
Merge pull request #13 from lizardsystem/reinout-flot-without-yellow

Graph without yellow + more than 3 results when they're on the same location