Remove setter for height and width in Abstract.Axis to reduce control knobs.

Close #870.
Remove redundant super calls.
Remove confusing call of gutter in test
Merge branch 'develop' into remove_height_width_setter_in_axis

Conflicts:
	plottable-dev.d.ts
	plottable.d.ts
	plottable.js
	test/tests.js
Merge pull request #1098 from palantir/remove_height_width_setter_in_axis

Reduce control knobs in Abstract.Axis.