Add some functionality to map image ordinals to objects or rel paths.
Style fixes for Travis, also check we don't exceed maximum ordinal.
Couple more fixes to please Travis, but now I ran jshint locally first.
Merge branch 'master' into add-image-ordinal-mapping

Conflicts:
	web/src/js/lib/models/VisualizationModel.js
Merge pull request #30 from Kitware/add-image-ordinal-mapping

RFR: Add some functionality to map image ordinals to objects or rel paths.