All apps should reference shared.topic_tools rather than main.topicdata, for fewer cross-app dependencies (and to avoid the main-specific, big computations in main.topicdata)
Central now needs gettext, since coach reports are localized.
Small cleanup items
Merge branch 'release-0.11.1' of github.com:learningequality/ka-lite into no_central_content_root
Get coach reports to work--had fouled up the url naming
Removing stray jpg
Merge pull request #1233 from bcipolli/no_central_content_root

Eliminate central server's CONTENT_ROOT