Implements rudimentary support for placeholder values inside a string
with the `PlaceholdersBuffer` class. The latter helps the newly added
sum aggregation query suggestion to automatically focus on the label
so users can easily choose from the available typeahead options.
Related: #13615
- use global range types
- add ErrorBoundary around individual Explore components
- fix table merge on empty results
- fix TimePicker date parsing on ISO dates
- fix TimePicker range string after relative move
Existing querying was grouped together before handed over to the
datasource. This slowed down result display to however long the slowest
query took.
- create one query transaction per result viewer (graph, table, etc.)
and query row
- track latencies for each transaction
- show results as soon as they are being received
- loading indicator on graph and query button to indicate that queries
are still running and that results are incomplete
- properly discard transactions when removing or changing queries
- use react-highlight-words
- add highlighting (color and border) to the matching substring of the
suggested items in the typeahead
- extracted match finding from logging datasource
- created new utils/text.ts class for text-related functions
- added more types
- remove `edited` property of query objects
- query object semantics changes to be initial values only
- resetting or externally modifying a query is done via giving it a new
react key, which replaces the row completely
- query changes while typing are sent up to Explore to be saved in a
local property that is not part of the component state (prevent
control circle)
- all Explore functions using the queries must access the local property
for current values
