Removing a couple of files which are no longer used.
Add drop statement for index contribution_contribution__default_sort
Actually call do_first method in importer base, but only if it's not a  dry run.
Adding a couple indexes to contributions_all_relevant to try and speed up aggregates
Fixing transaction type descriptions
Merge branch 'master' into partitioning
Fixed candidate rankings to avoid both overcounting and ignoring primary losers