Fixes #3750 - two bugs, one in Maqetta (mostly), one in Firefox. Maqetta
was calling dojo.style with stroke-width instead of strokeWidget (works
ok in WebKit but not in Mozilla). On the Firefox side, inherited SVG
properties seem to have new bugs in recent updates. Had to work around
that problem.
Merge branch 'master' of github.com:maqetta/maqetta