dashboard: show save as button if user has edit permission
This will show the "Save As..." button in dashboard settings page if the user
has edit permissions (org role admin/editor or viewers_can_edit enabled)
and has at least edit permission in any folder.
* moved datasource related functions to panel sub-class
* expand panel template vars for url
* added keybindings for x -> Explore
* url encoding for explore state
* panel container menu gets new Explore entry (between Edit and Share)
* entry only shows if datasource has `supportsExplore` set to true (set
for Prometheus only for now)
* click on Explore entry changes url to `/explore/state` via location provider
* `state` is a JSON representation of the panel queries
* datasources implement `getExploreState()` how to turn a panel config into explore initial
state
* Explore can parse the state and initialize its query expressions
* ReactContainer now forwards route parameters as props to component
* `pluginlist` and `singlestat` panel subclasses needed to be adapted because
`panel_ctrl` now has the location provider as a property already
The table-panel-wrapper class got removed when clicking on the panel
menu which resulted in extra padding for the .panel-content div. This
fixes that by setting the table-specific css class lower down in the
html.
* adds +/- buttons to query rows in the Explore section
* on Run Query all query expressions are submitted
* `generateQueryKey` and `ensureQueries` are helpers to ensure each
query field has a unique key for react.
#11211 removed the unit key ppm in favor of conppm. A change which is not forward compatible.
This commit revert the unit key back to ppm.
Also adds some better error description if trying to use a unit which don't exists.
Fixes#11743
From review feedback:
* s/helper/metadata
* combined positional args to _request into options dict
* metadataRequest reuses _request()
* moved consumption of this.httpMethod into _request, can be overwritten
in options due to spread-after
* When set to `true`, the `silent` option for backend_srv requests
suppresses all event emitters that are triggered when the response is
received.
* Added `helperRequest()` to the Prometheus datasource to support
requests that are not triggered by the user, e.g., for tab completion.
`helperRequest()` sets the `silent` option.
* Migrated all non-timeseries queries of the Prometheus datasource to
use `helperRequest()`.
Fixes#11673
