Restore missing directive for bar charts
Restore missing directive for bar charts

STSILABS/open-fda,STSILABS/open-fda,STSILABS/fda-sandbox,STSILABS/open-fda,STSILABS/open-fda,STSILABS/fda-sandbox,STSILABS/fda-sandbox,STSILABS/fda-sandbox,STSILABS/fda-sandbox,STSILABS/open-fda