Migrate to react-v15.5.0

Cleanup index.html

Swisscom bigdata sort druid select

Dox for how to unblock file when running on Windows [ci skip]

Copy tweaks and fixes

* handle 0

* cleanup

In-DB Caching

Add a test for #4707 [ci drivers]

* consistent pie chart formatting

* format title on hover

Avoid having to build twice when starting build-hot

Handle special characters in BigQuery expression aggregations

Handle ObjectId(...) calls in Mongo native queries

Wwwiiilll presto driver 2

characters [ci drivers]

Query builder & dashboard cards should say "No Results" if the query result is null

Cleanup frontend question/dashboard routes