Refs #10566. Adding linux version of getOSVersionReadable.
Merge remote-tracking branch 'origin/feature/8961_SaveReflThreeColumn_save_algorithm'
Refs #10566. Adding code that should work for mac and windoze
Merge remote-tracking branch 'origin/master' into feature/10566_getOSVersionReable
Re #10566. Adding implementation for windows and mac.
Refs #10566. Check for the files on every os.
Merge remote-tracking branch 'origin/master' into feature/10566_getOSVersionReable
Merge branch 'master' of github.com:mantidproject/mantid
Merge pull request #70 from mantidproject/feature/10593_jsoncpp_rpm

Add jsoncpp to the mantid-developer rhel/fedora packages
Merge pull request #69 from mantidproject/feature/10566_getOSVersionReable

Add ConfigService::getOSVersionReadable()
Merge remote-tracking branch 'origin/feature/10385_loadnexus_speed'
Merge branch 'feature/8961_SaveReflThreeColumn_save_algorithm'
Merge remote-tracking branch 'origin/feature/10541_nofit_cylindrical_intensity'
ensure .png extension so QPixmap save works, re #8482
new helper function for .png extension, re #8482
Merge branch 'bugfix/8482_SliceViewer_doesnt_save_image' into develop