Merge pull request #17 from wtsi-npg/master

wtsi master to devel after point release 73.5
Merge pull request #4 from wtsi-npg/devel

Devel
test for npg_daemon_control fixed to cope with presence of daemon plugins that are not defined in this package
Merge pull request #18 from mgcam/devel

mgcam devel to wtsi devel to fix a test
npg_testing::db module: copes with old-style naming convention for yml db fixtures, new subroutine for running tests against existing test database
Merge pull request #19 from mgcam/devel

npg_testing::db module: copes with old-style naming convention for yml d...
missing POD added
Merge pull request #20 from mgcam/devel

missing POD added
Merge pull request #21 from wtsi-npg/devel

Devel