Update polyline.class.js

Fixes position in group with transform matrix
Update polygon.class.js

fixes position in group with transform matrix
Update line.class.js

Fixes position in group with transform matrix
Update polygon.class.js

Some svg triggerend some situations making me belivie i don't have to touch anything if i'm parsing a svg.
Update polyline.class.js

same for polygon
Update polygon.class.js
Merge pull request #10 from asturur/Various-position-fix-polygon,-polyline,-line

Various position fix polygon, polyline, line