Enhance commit 7a9beb1e70e6ec9308b5a44aa8d96b9d218e0af4 to enable names like A' also for mirror reflection in sketch.js
Suppress names for copied circles (ablations) in sketch.js
Followed the suggestion of sebablanco and refactored usr2screen. Quick tests on http://netrenderer.de/
showed no problems with VML.
Merge branch 'master' of github.com:jsxgraph/jsxgraph