Merge pull request #462 from peternewman/e1.37-2

Tidy some doxygen
Merge pull request #463 from peternewman/e1.37-2

Various tidying up
Fix a bug
Merge pull request #464 from peternewman/e1.37-2

More misc tidying
Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2