Consolidated all "dev tests" information into 1 place.  Updated testing/devtool.md appropriately.  Fixed type in testing/devtool.md.
Merge pull request #839 from cdearborn/pull-req-master-5d29cb40726cb17789719a868b0c06d5fc54c915

+2 Consolidate ./dev tests info into 1 place [1/1]