Added all code sheet lookups

Still need:
* County names
* MSA names
Added code sheet files
Add 2007 and 2008 public HMDA zip files; change from unzip to 7zip for decompression due to 2007 zip file incompatibility with unzip
reformat from tabs to spaces
Reformat from tabs to spaces
Merge branch 'master' of github.com:marcesher/qu
Remove debug
Added county names to hmda data
Merge conflict from marcesher/master
Use full HMDA data instead of a sampled subset of the data
Merge pull request #50 from cndreisbach/hmda

Update HMDA definition