An option to disable all tooltips
Fix bottom draw options display

The menu to save and cancel the action on vertical menu to delete layer was displayed in two lines. I fixed this problem adding a style line to css.
Merge pull request #195 from Zverik/master

showLength for polylines and showRadius for circles
Merge pull request #196 from Zverik/notooltips2

An option to disable all tooltips
Merge pull request #198 from moiarcsan/patch-1

Fix bottom draw options display
Coding style fixups.
Update changelog
Bump version to 0.2.2
Update build
Bump package.json version
Leave at least 3 points in a polygon