Converted '.extend' to 'class # extends' and prototype calls to super
Merge branch 'master' into convert-extends-to-class
Merge pull request #74 from Connexions/convert-extends-to-class

Converted '.extend' to 'class # extends' and prototype calls to super
Merge branch 'master'
Merge remote-tracking branch 'origin/load-and-addchild' into github-refactor
Container now always has something in 'contents' attribute
load method is defined in one place
Merge branch 'loading-semantics' and `load-addchild` together
Merge branch 'loading-semantics' into github-refactor
Missing images are logged
Changed tree:change listener to one with 2 arguments

instead of 3
Updated App loading with a local (mock) app

The mock application replaces Github with a read-only, unzipped EPUB
Configure the Github user and repo from the address bar

by using browser routes
Start routing only if it has not already started
Merge branch 'optional-history-start' into github-refactor
Added hack to load the workspace
Added how to configure the repo from browser addressbar