add graphite multiplySeries function

Missing carriage return in init script when displaying usage

fix(phantomjs binary): fixed PR #2832 so that it works on linux, now phantomjs based server side rendershould work on mac and linux, maybe even windows

fix(dashbard save as): fixed wonky behavior in save as modal, cursor to the end randomly, fixes #2837

feat(elasticsearch): templating terms query should have size set to zero to return all terms, fixes #2827

Single stat panel throws warning on multiple series result.

fix(singestat): fixed missing sparklines, caused by recent changes to time range handling, fixes #2815

This reverts commit 075d0182.

Fix changelog formatting

feat(opentsdb): templating, added default match format option, now new variables with opentsdb datasource will automatically use the new pipe format, #2808

Implemented Opentsdb MultiSelect Templating.

refactor: polishing OpenTSDB related PR #1646, added caching of aggregators request so only one call is made