Allow the SPI RDM responder's device label to be set
Read and write the SPI device label to/from the preferences file
Whitespace tidy
Update the copyright dates on the webpages
Standardise some more copyright messages
Fix some comments
Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2
Merge pull request #457 from peternewman/e1.37-2

Allow the SPI RDM responder's device label to be set