* APM table
* Remove unnecessary changes in Explore.tsx
* Enhancements
* Show empty table if filter returns no results for table
* Error checking
* Combine extra filter options
* Convert service map query to apm query for apm requests
* Simplify links
* Better query building
* Extract method and clean up
* Upgrade filter
* Self review
* Export method
* Update test
* Switch area-chart to lcd-gauge
* Remove AreaChartCell
* Colors, units and other UI upgrades
* Remove 2 queries and reuse existing queries
* Nested observables
* rate/error rate/duration links: open new pane with range query and exemplars turned on
* Align error rate values to rate values col according to span_name
* Rearrange code
* Several improvements
* Filter by span_name
* align the table col values to the same row name (rateName) across the table
* On click tempo link filter by span_name
* Filtering updates
* Ensure serviceQuery null is ok
* Update link expr
* Update duration p90 unit
* Tempo links case
* Update tests
* Self review
* Tests
* Empty state
* Remove some code
* Test: should build expr correctly
* Test: should build link expr correctly
* Test: should get rate aligned values correctly
* Test: should make apm request correctly
* Test: should make tempo link correctly
* Move apm table tests to its own describe
* Feature toggle
* Added to docs for APM table
* Add screenshot to APM table section in docs
* Add feature toggle to test
* Split queries and make method names clearer
* Doc changes
* Add back in config import removed by merge
* Update tempo link and tests
* Update filter
* Set field filterable: false
* Updated doc
* Remove @end from queries
* Add back in tempo link
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