added code to handle undefined ember routes
HG-63 added error handling for invalid paths; ember no longer crashes on unexpected urls
HG-63 cleaned up comments
small fix
Merge branch 'master' into HG-63-graceful-error-handling
Merge branch 'master' into HG-63-graceful-error-handling

Conflicts:
	views/layout.hbs
HG-63 indent[C
HG-63 commented
Merge pull request #76 from Wikia/HG-63-graceful-error-handling

Hg 63 graceful error handling
Merge branch 'master' into HG-55-table-of-contents-empty-fix