* Begin conversion
* Test setup started
* Begin rewrite of graph
* Rewrite as class
* Some tests passing
* Fix binding errors
* Half tests passing
* Call buildFlotPairs. More tests passing
* All tests passing
* Remove test test
* Remove Karma test
* Make methods out of event functions
* Rename GraphElement
- load recording rules from prometheus
- map rule name to rule query
- query hint to detect recording rules in query
- click on hint fix expands rule name to query
* Explore: Query hints for prometheus
- time series are analyzed on response
- hints are shown per query
- some hints have fixes
- fix rendered as link after hint
- click on fix executes the fix action
* Added tests for determineQueryHints()
* Fix index for rate hints in explore
- load all histogrammable metrics on start, based on `{le!=''}` series
query
- select dropdown shows all those metrics as well as histograms in a
special group
- select a metric will write fill the metric in the query box
- if a histogram is chosen, it will write a complete
`histogram_quantile` query
- added new dependency: rc-cascader
- Clear All button to clear all queries and results
- moved result viewer buttons below query rows to make it more clear
that they govern result options
- position was determined by SPACE, but Prometheus selectors can
contain spaces
- added negative lookahead to check if space is outside a selector
- moved braces plugin into PromQueryField since braces are prom specific
- queries are saved to localstorage history array
- one history per datasource type (plugin ID)
- 100 items kept with timestamps
- history suggestions can be pulled up with Ctrl-SPACE
* Explore: facetting for label completion
- unified metric and non-metric label completion
- label keys and values are now fetched fresh for each valid selector
- complete selector means only values are suggested that are supported
by the selector
- properly implemented metric lookup for selectors (until the first
metric was used which breaks when multiple metrics are present)
- typeahead tests now need a valid selection to demark the cursor
* Fix facetting queries for empty selector
