Extend horizontal legend.
getLegend.
Tests.
Test.
Fix test.
Change way how to calculate entry.
Merge branch 'develop' into merge_legends

Conflicts:
	plottable.js
	src/components/horizontalLegend.ts
Minor.
Remove Legend.
HorizontalLegend -> Legend
Add test.
fix docs.
Fix docs.
Use last hit entry.
Merge pull request #1419 from palantir/merge_legends

Merge legends
Merge branch 'unify_legends' into remove_legend

Conflicts:
	src/components/horizontalLegend.ts
Merge pull request #1421 from palantir/remove_legend

Remove Legend.ts and rename HorizontalLegend -> Legend
Change default alignment.
Merge pull request #1429 from palantir/default_align

Change legend's default alignment.
Quicktest Fixes