Added filter in ControlPanelsContainer for explore V2 (apache#1647)

* Added filter in ControlPanelsContainer

* Move function for getting url params object to utils

* Fixed python test

* Move Filter to separate component

* Added specs and made changes based on comments

* Moved specs to right folder

Admin / Alpha permission cleanup and fixes.

Admin / Alpha permission cleanup and fixes.

v0.13.2

v0.13.1

v0.13.0

[explore v2] populate dynamic select field options (apache#1543)

* pass field options in viz json

* move field options to fetch_datasource_metadata

* on control panels container mount, fetch datasource meta data and set dynamic field choices

* render options for select fields

* use component class rather than sic

* fix linting

* fix whitespace

* delete unused var

* only render fields once datasource meta has returned

* fix typo

* add datasources and fix column formatting

* fix tests

* never used function

* fix tests

* add test for fetch_datasource_metadata

* remove unneeded props

v0.12.0

[hotfix] sqllab presto

Fix the js build running out of heap space (apache#1408)