migration and skeleton classes
adds associations and convenience methods
added debugging info
fixed bug in migration; updated LC display code
LC PC/FC create, delete, update, reorder working
initial cut at migration
initial cut at default PC/FC controllers/views
LC default PC/FC related code - initial cut
Merge branch 'master' into create_lcpc_and_lcfc
initial pass as removing BasicFeedbackCondition name/usage
fixed table name
reordered migrations; removed unneeded files
fixed FeedbackCondition.inheritance_column
more tweaks to fix column info
new schema
added warnings about unlabeled exercises matching default PC/FC
fixed LP.set_defaults and related calls
added comments for enabling mailcatcher
fixed editing of PCs/FCs
tweaked PC/FC displays