Update moment.js

Fix support for Java 1.7   #2098

Metabot improvements 

Format dates using timezone returned in the data

Cleanup deprecated React APIs / enforce more lint rules

Conflicts:
	frontend/src/lib/formatting.js

refactor app mount point to remove flex context by default

Fix metric bugs

fix up the rendering of retired metrics in the field list and the description on retired metric tooltips.

don't show the `Common Metrics` aggregation section if there are no active metrics the user can reasonably pick from.

Fix bullet points in dashboard tips markdown 

restore printlns.

Tidy up metabot logging

Correct typos

use a reader so that we load the data properly out of a jar file.

Fix pulse rendering errors