An emerging pattern with makeSiblingTemplatesList() is that views calling that
function then append a known, default template "just in case". This change
adds a default_template parameter to makeSiblingTemplatesList() to eliminate
the extra "append a known default to the end" step for the caller.
Patch by: Todd Larsen
Review by: to-be-reviewed
Refactor soc/views/user/profile.py to make use of several of the new views
available in soc/views/simple.py.
Patch by: Todd Larsen
Review by: to-be-reviewed