1. Made this dependent the current version of acs-subsite on HEAD (app group
tcl API changes which is also tracked in .LRN, though this dependency is
tracked in dotlrn-lorsm, the official way to add SCORM support to a .lrn
community).
2. Use the new API and the fact that .lrn now defines a community as an app
group to remove calls to dotlrn_community::get_community_id.
3. Removed a bunch of commented-out, .lrn-only permissions twiddling, but left
in the toggle inherit call and dotlrn-related parameter/xml extension. This
can exist without dotlrn being installed and since there's really not budget
available to totally clean this stuff up, I left it in even though I suspect
that in practice it's not used.