Sort python package names by version not alphabetically

Instead of:

• py27-Jinja2
• py311-Jinja2
• py37-Jinja2

Display:

• py27-Jinja2
• py37-Jinja2
• py311-Jinja2

ALSO sneaking in here:

improvements to classes/vuxml_ranges.php - FreshPorts/vuxml#9

• vuxml ranges will now be displayed with math symbols, not lt, gt, etc.

What's Changed

• Sort python package names by the package version, not the usual sort… by @dlangille in #597

Full Changelog: 2.10.4...2.10.5