Add the possibility to avoid the black border for tag rendering.
Add the possibility to avoid the black border for tag rendering.

If  noTagBlackBorder is set to true we use the commit color for the tag text otherwise (previous behavior) we use a black font and the commit color for background

nicoespeon/gitgraph.js,nicoespeon/gitgraph.js,nicoespeon/gitgraph.js,nicoespeon/gitgraph.js