Install optipng in CircleCI.

Merge pull request getredash#422 from EverythingMe/feature/288_bq_ins…

…tance_auth

Feature: BigQueryGCE query runner that uses instance auth (fixes getredash#288)

Fix repo name

Merge pull request getredash#399 from EverythingMe/feature/schema

Feature: schema browser and simple autocomplete

Merge pull request getredash#401 from EverythingMe/fix/wrong_time_zone

Fix: use correct date when converting to UTC to get correct timezone.

Add annotations for the injector.

Merge pull request getredash#400 from EverythingMe/feature/better_sch…

…eduler

Improved query scheduling option

Merge pull request getredash#397 from EverythingMe/feature/edit_other…

…s_queries

Fix: forking broken

Merge pull request getredash#396 from EverythingMe/feature/edit_other…

…s_queries

Feature: allow editing others' queries

Merge pull request getredash#395 from EverythingMe/feature/post_to_cr…

…eate_a_query

Convert additional dates to user's formatting