This PR is intended to address #192, for the most part, but also includes:
a fix to the Jekyll/liquid logic so that the debugging variable is _config.yaml is actually respected
the removal of margin calculations in the svg -- these should be handled by page layout, and reconciling different margins on different super-imposed SVGs on different co-ordinate systems is a recipe for unmaintainability
a change to the 'redraw-on-resize' logic to make it more comprehensive
This PR is intended to address #192, for the most part, but also includes:
debuggingvariable is_config.yamlis actually respected