LTSINSCRIP-12 #time 15m #comment move_up and move_down commands now safe on homepage  #resolve

The floor controller was only redirecting when successful - now it redirects regardless and sets flash message appropriately.
LTSINSCRIP-17 #time 30m #comment Task complete, assuming language is ok. #resolve
LTSINSCRIP-18 #time 30m #comment index added to posts on created at #resolve

Tests expect an index on created_at - as it matches practice otherwise in use in DB,
and seems logical, why not?