Changed /srv permissions.
Started page to edit entire system.
Edit system displays subdiscipline areas, but no saving function yet.
Bad start at form for editing entire system.
Was barking up the wrong tree with url structure.  This commit is recent work on form to edit whole school system.
Fixed view for individual school, now shows just subject areas, with better url structure.
View for single subject area works, revised url.  Also minor fixes to school view.
Views for subdiscipline area works.
Competency area view works.
Essential understanding view works.
Cleaned cruft from urls and views from old approach.
Each simple view for a level now lists the next level in the hierarchy as well.
Edit school page works for editing subject areas.
Editing subject areas actually works now.
Inline formset attempt; not appealing.
Gave up on inline formsets for now, edit_school allows for clean editing of existing subject areas and addition of new sas.
Edit subject areas allows user to edit the subdiscipline areas for a given subject area.
Fixed error in saving sda, needed fk to sa.
Cleaned some cruft.
More cruft (old imports).