Order referenced packages alphabetically on package detail page

Created by: homeworkprod

The list of packages required or provided by a certain package is quite hard to grok when it's not ordered by name.

Looking for a certain package is unnecessarily hard, especially if the exact name is not known, so having the browser search the page is not an option. I have even overlooked packages because I didn't expect them to appear elsewhere in the list.

When packages are ordered by name, they are automatically grouped by prefix, which is also useful.

I (think I) implemented package ordering by name that with this patch, but I haven't been able to actually test it.