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

feat(elasticsearch): added new templating all format and muli format named , also added automatic setting of correct all and multi format depending on data source, closes #2696

fix(graphite): minor fix to query editor when using summarize function with no metric segments, only series ref, fixes #2788

Fixed #2798. Removed unused components.

fixed(share modal): fixed issue with sharemodal introduced with recent change to time handling, #2791

feat(elasticsearch): finished work on adding support for filters aggregate, you can now split series by query using group by filters, closes #2785

feat(elasticseach): alias and lucene query fields are now visible/usable when using raw json query, #1034