Replace page control with image swapping
Better organization of lists. Do degree track though filtering rather than loading new json.
Cache image loads for project view as well.
Some improvements to look of curtain, shows image on it now.
Load spinners in project view.
Merge branch 'master' of github.com:steamclock/catalog

Conflicts:
	iOS App/Catalog.xcodeproj/project.pbxproj
	iOS App/Catalog/ProjectViewController.xib