Merge pull request #30 from wtsi-npg/master

pull changes from wtsi master (point release 73.9) to wtsi devel
removed unnecessary separate log from apache configuration file
Merge pull request #8 from wtsi-npg/devel

pull changes from wtsi devel to my devel
Merge branch 'devel' of github.com:mgcam/npg_tracking into devel
Merge pull request #31 from mgcam/devel

pull change to apache config file to wtsi devel
Merge pull request #32 from wtsi-npg/devel

pull request from wtsi devel to wtsi master to create point release 74.0