Measuring tool suggestions

[osjonathan]

A number of relatively simple suggestions for the measuring tools:

(a) Hectares as a unit of area measurement.
(b) While there's a measure_tool.show_area_segments, there doesn't seem to be a: measure_tool.show_line_segments parameter.
(c) Nautical mile as a unit for length.
(d) Use the ° (degree) and minute (′) symbol's for bearings.
(e) Put the units after the segment length/area. Abbreviations per the documentation listed would make sense.
(f) Consistency between the length and area tools. One uses bold and has lots of space between the columns (good), the other uses underlines and has no space between columns (bad). One says "clear log" with a regular HTML button, the other says "clear" with a fancy looking button. (IMO the Area tool is better in all regards.)

[bfischer]

moved to ​https://github.com/geomoose/geomoose/issues/21