bugfix in updatePathShadow
bugfix
Merge branch 'master' of https://github.com/webgme/webgme
this._DEFAULT_LINE_STYLE
bugfix (descriptorcore was missing)
Merge branch 'master' of https://github.com/webgme/webgme
bugfix: getEditableRegistry instead of getRegistry
connection end marker shadow rendering enhanced

only the endmarkers are rendered, the path between them is not
Merge remote-tracking branch 'origin/master' into connectionXing

Conflicts:
	client/js/Widgets/DiagramDesigner/Connection.js