You can find the Basic Web Content Template in the global scope (use the scope selection compass and "My Sites" as administrator to get there). However, it won't help solving your problem: I'll copy it here:

${content.getData()}

E.g. "related content" is rendered elsewhere.

In my experience it's rendered in order of creation of the relationship, but from the top of my head I can't tell you where. You might want to grep the source code for "related" and see if you can find the needle in the haystack. Worst solution would be to remove the relationships and recreate them in the desired order through the API. Unless you want different orders in different places.