* Explore: Adds ability to return to origin dashboard

Move some of the buffering with live streaming inside of the datasource, sending full frames instead of deltas and allow Loki in dashboards.

* convert user organizations section to react

* reload page on org change

* Check that timeEnd if defined before comparing to avoid false truthiness

* Moved loop

Fixes #18902

* LDAP: Add API endpoint to query the LDAP server(s) status|

This endpoint returns the current status(es) of the configured LDAP server(s).

The status of each server is verified by dialling and if no error is returned we assume the server is operational.

This is the last piece I'll produce as an API before moving into #18759 and see the view come to life.

This change adds formal support for the South African Rand in the list of currencies.

* ErrorHandling: Error boundary for every container

* Remvoe custom query editor errors

Styles: fixed gradient in logo so it doesn't go outside the logo and get a defined start and end color, changed brand gradient to be the same as in logo, created new variable for vertical gradient (#18882)

Fixes #18856

- Fix cancellation error showing in UI
- Fix display of object values in log rows

* Move the ReloadLDAPCfg function to the debug file

Appears to be a better suite place for this.

* LDAP: Return the server information when we find a specific user

We allow you to specify multiple LDAP servers as part of LDAP authentication integration. As part of searching for specific users, we need to understand from which server they come from. Returning the server configuration as part of the search will help us do two things:

- Understand in which server we found the user
- Have access the groups specified as part of the server configuration

* LDAP: Adds the /api/admin/ldap/:username endpoint

This endpoint returns a user found within the configured LDAP server(s). Moreso, it provides the mapping information for the user to help administrators understand how the users would be created within Grafana based on the current configuration.

No changes are executed or saved to the database, this is all an in-memory representation of how the final result would look like.

* WIP: Use data frames in explore

* Explore: everything seems to be working again

* Reworked ResultProcessor tests

* Fixed unit test

* Add some typings and comments

without this lock there is a race condition between the scheduler and job processing.

Adding pause/resume buttons and pause on scroll to prevent new rows messing with the scroll position.

* Performance/Webpack: Introduces more aggressive code-splitting and other perf improvements
- Introduces dynamic imports for built-in plugins
- Uses dynamic imports for various packages (rst2html, brace)
- Introduces route-based dynamic imports
- Splits angular and moment into separate bundles

* WIP: inital POC

* Wip: Moving forward

* Wip

* Refactor: Makes loading indicator work for Prometheus

* Refactor: Reverts prom observable queries because they did not work for multiple targets

* Refactor: Transforms all epics into thunks

* Fix: Fixes scanning

* Fix: Fixes so that Instant and TimeSeries Prom query loads in parallel

* Fix: Fixes negation logic error

* Wip: Introduces PanelData as a carries for query responses

* Refactor: Makes errors work again

* Refactor: Simplifies code somewhat and removes comments

* Tests: Fixes broken tests

* Fix query latency

* Remove unused code

* Adding DashboardPicker component

* fix prop names

* fix prop names pt2

* ErrorHandling: Fixed Prometheus query editor error and added error boundary

* Update public/app/core/components/ErrorBoundary/ErrorBoundary.tsx

Co-Authored-By: kay delaney <45561153+kaydelaney@users.noreply.github.com>

* Fixed ts error

(cherry picked from commit be2e2330f5c1f92082841d7eb13c5583143963a4)