Merge branch 'demo' into FLUID-4323-demo
Merge branch 'demo' into FLUID-4323-demo
FLUID-4323: Fix up the interaction between content simplification and the TOC.
Merge branch 'demo' into FLUID-4323-demo
FLUID-4323: Fixed the chrome issue that the table of contents does not populated properly.
Merge remote-tracking branch 'cindyli/FLUID-4323' into demo

* cindyli/FLUID-4323:
  FLUID-4323: Fixed the chrome issue that the table of contents does not populated properly.
  FLUID-4323: Fix up the interaction between content simplification and the TOC.