request stored fields and merge them into into hit._formatted. Closes #1766
Override mapping for _timestamp to be a date
Break out mapping resolver, add initial tests
[discover/tableRow] itterate on the style of the source field a bit
[discover/tableRows] update selector in tests
[discover/tableRow] add a single space between pairs, update styles accordingly
Merge pull request #1993 from spenceralger/pretty-source

[discover/tableRow] iterate on the style of the source field a bit
Add tests for _map_field and _cast_mapping_type
Merge master
Use standard theme lighter gray for table field names
Switch to standard lighter gray in the table
Add highlighting inside Discover
Merge pull request #1998 from rashidkpc/feature/field-merge

Merge stored/index fields into _formatted
Tweak CSS, change em to mark
Merge pull request #1 from rashidkpc/pr/1999

Tweak CSS, change em to mark
fix master conflicts. Merge it like its #1999