Add control file for October 2013 boundary line changes. Nothing special to do.
Limit area lookups by unit_id to the current generation.

There can be areas from previous generations which share the same unit_id but which are different. EG: http://mapit.mysociety.org/area/143398.html replaced http://mapit.mysociety.org/area/15941.html but kept the same unit_id. Without this additional lookup we don't know which one to check
Add some manual workarounds for boundaries which have got new GSS codes but we don't want new areas to be created for them.