dashboard changes#38

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VIthulan wants to merge 11 commits intomalithd:masterfrom

VIthulan:master

Commits on Feb 9, 2016

Commits on Feb 12, 2016

stacked bar chat and group by date created.
VIthulan
committed

Commits on Feb 16, 2016

Timely groupby API and UI fixes
VIthulan
committed

Commits on Feb 19, 2016

Commits on Feb 25, 2016

Adding facet search functionality
VIthulan
committed

Commits on Feb 29, 2016

Adding time range filtering feature
VIthulan
committed

Commits on Mar 4, 2016

Adding time range filtering feature
VIthulan
committed

Commits on Mar 7, 2016

adding dashboard rest api core features
VIthulan
committed