Define SVG Elements and Attributes and use namespace aware javascript fcn to create.
Fix spurious underscores in AttributesSVG.
Remove 'svg_' prefix and resolve symbol conflicts.
New convention for translating SVG element and attribute names.
New 'Graphics.UI.Threepenny.SVG' module imports both SVG elements and attributes.

At the suggestion of github user jvdp.
Documentation for 'Graphics.UI.Threepenny.SVG.Elements' now describes name translation more accurately.
Acknowledge contributions by Steve Bigham.