Merge pull request #47 from rjc123/master

Phase 3of3 Treasury manual mappings
Merge pull request #48 from rjc123/master

Phase 3of3 Treasury manual mappings - take 2
Emptying out the trump file post munge.
Emptying out the extras file post munge.
Updated trump mappings for HMT
Late breaking ones from HMT
Emptying trump file post processing HMT
Final manual mappings for HMT
DWP research redirects.
DWP statistics mappings
Archived links from research and statistics dwp
Merged research into statistics for dwp
Combining dwp research existing mappings into stats