* [Maps] Move sort out of top hits configuration for ES documents source
* add migration script to convert topHitsTimeField to sortField
* update i18n translations
* add jest test for es docs source UpdateSourceEditor component
* remove time configuration from top hits docs
* update migrations integration expect statement
* review feedback
* reverse hits list so top documents by sort are drawn on top
* update functional test expect to account for reversing hits order
* update another functional test expect clause for reversing hits