Increase width of SVG charts to keep whole heading/subheading
Replace ';' in the middle in variable declaration list with ','

The following variable declarations were treated like assignments
to global variables instead.
Center chart area horizontally in each SVG picture

In SVG pictures with enlarged widths, the charts now appeared
flush left. I defined a "g" element for the chart area,
translated using "transform" attribute, right to the half
of the chart then back left for the half width of the chart.
Merge branch 'enhancements'
Merge branch 'master' into gh-pages