paging working. need to test refresh. weird bug with writing json that comes back from server to disk.
added paging for browsing a user's shared projects
removed pull to refresh. having issues w/ content offset.
working creating a share chooser to share to social networks from canvas
working on sharing from canvas
added pull to refresh and fixed scroll inset problem
merged master and fixed conflict
working on creating share interface for social share from canvas
Merge branch 'master' into zusehub-ios