* QB modes, actions, and drill throughs.

* Refactor drill throughs + misc bug fixes

* Port sort action to drills

* Smarter 'view this/these' name

* Scalar hover state

* QB actions: don't skip action selection screen unless the action is marked as 'default'

* Fix flow errors

* Fix drills

* Show "This X's Ys" for FKs

* Prevent qb from uneccesary push states

* Don't show (fk) breakout fields that have already been broken out

* Fix 'drill into this' unit

* Cleanup timeseries footer

* Cleanup qb selectors

* Namespace all qb actions

* Make modes dependent on previously run card

* More timeseries footer cleanup

* Fix table crash

* Make breakout legend clickable

* Fix datagrid pivot test

* Flow + lint

Rename pulse skip to skip_if_empty, add migration and other backend changes required, clean up frontend

* Google Auth  [wip] [ci skip]

* "No Metabase account exists for this Google account" screen 

* Single Sign On Settings Page [WIP] 

* Google Auth v1 

* update login layout

* add setup instructions

* add google logo for google account signups

* clean up sso form layout

* Merge branch 'master' into google-auth [ci skip]

* Fix Google Auth button not showing up after initial load 

* Fix bug when creating session for user with no last_login 

* Organize google auth backend code a bit 

* Lots of tests for Google Auth 

* Add Save Button to Google Auth settings page 

* Use onChange instead of onBlurChange 

* Make "save changes" button say "changes saved" after save 

* adjust user settings for managed accounts

* Ensure we clear GA creds if GA login fails

* tweak password reset email

* owned google sign in button

* use var

* Cleanup some random legacy Angular junk

* Keep Redux and AppState currentUser in sync, fixes login issue

* render() should have side-effects! Fixes $digest errors on logout

* Test fixes 

* fix checkbox

* cleanup

* remove unused import