Add drawer to SubmissionActivity to replace the tabs.
Add icon to show/hide content drawer. Add new use of UrlParser to select the proper fragment for the content drawer.
Fix accidental breaking of comment links
Merge branch 'master' into content-drawer
Fix ImageFragment so that it closes when single tapped.
Add YouTube icon resources.:
Merge branch 'master' into content-drawer
Remove content drawer in favor of overlays.