Merge pull request #188 from wtsi-npg/devel

pull request from wtsi devel to master to create release 77.7
Merge pull request #189 from wtsi-npg/devel

additionally, pull MANIFEST changes to release 77.7
added travis config file
rely on travis defaults in build
travis config - install GD libraries
add GD per bindings
travis conf fixes
add explicitly dependency on mysql driver
remove password from db conf to comply with travis build
Merge remote-tracking branch 'wtsi/devel' into devel
Merge remote-tracking branch 'david/wtsi_free_samplesheet_test' into devel
tests fail in travis ci, trying to diagnose
skip tests if prereq database update failed or resulted in truncated data
fix number of skipped tests
demo version of status monotor
more realistic callbacks with tests
remove unused attribute
Change reference name and location
Merge pull request #192 from KateTaylor/reference_name_changes

Change reference name and location
Review comments