Adds a version disclaimer for the page parameter in folder/dashboard search docs.

Fixes #16827

This is the first step moving towards Explore supporting logs for 
more datasources than Loki. In the first step we move all the log 
processing from Loki into Explore.
- Make explore convert logs result returned from datasources to SeriesData, 
if needed, and for now convert SeriesData to LogsModel.
- Loki datasource query now returns SeriesData and all
processing have been moved into explore instead.
- Removed key from LogRowModel and use log row indexes as 
the unique key instead.
- Removed id from LogsModel since it looks like it's not in use.
- Introduced a new class FieldCache which is convenient to use when
looking up multiple fields and/or field types and series values.

Closes #16287

the WithSession wrapper handles retries and connection
management so the caller dont have to worry about it.

* Add file path to metadata and show it in dialogs

* Make path relative to config directory

* Fix tests

* Add test for the relative path

* Refactor to use path relative to provisioner path

* Change return types

* Rename attribute

* Small fixes from review

Prometheus: Adds tracing headers for Prometheus datasource

* Fix parsing of the config

* Remove unnecessary conversion

* Remove timeout modification

Co-Authored-By: aocenas <mr.ocenas@gmail.com>

* Remove unused import

* Provisioning: Trying to fix test

* Use better sync strategy for test

* Lower the timeout

* Remove commented code

Co-Authored-By: aocenas <mr.ocenas@gmail.com>

Explore now uses the timezone of the user to decide if local browser 
time or UTC should be used. 
- Now uses TimeRange instead of RawTimeRange in explore item
state tree and only parsing actual time in a few action
handlers.
- Time picker should now properly handle moving back/forward and
apply time range when both utc and non utc time zone.
- URL range representation is changed from YYYY-MM-DD HH:mm:ss
to epoch ms.
- Now uses AbsoluteTimeRange in graph component instead of moment.
- Makes a copy of the time range passed to timeSrv to make sure immutability
of explore time range when for example elasticsearch test datasources uses
timeSrv and sets a time range of last 1 min.
- Various refactorings and cleanup.

Closes #12812

Closes: #15992

Progress: #14714

This fixes the CI script for postgres integration tests so that
all tests are run.

* Feature: introduce LdapActiveSyncEnabled setting

We probably remove it after the active sync is done.
But at the moment we do not want to affect the current users
with not fully tested feature

* Chore: move settings in more logical order

* Plugins: ReactPanelPlugin renamed

* Plugins: renamed PanelPlugin to PanelPluginMeta and VizPanelPlugin to PanelPlugin

* Mobile: Switch to mobile view already at md or lower breakpoint

* UX: Tweaked breakpoint so that media-breakpoint-up(md) will only apply to screens larger than normal ipad

* Updated snapshots

* Feature: add cron setting for the ldap settings

* Move ldap configuration read to special function

* Introduce cron setting (no docs for it yet, pending approval)

* Chore: duplicate ldap module as a service

* Feature: implement active sync

This is very early preliminary implementation of active sync.
There is only one thing that's going right for this code - it works.

Aside from that, there is no tests, error handling, docs, transactions,
it's very much duplicative and etc.

But this is the overall direction with architecture I'm going for

* Chore: introduce login service

* Chore: gradually switch to ldap service

* Chore: use new approach for auth_proxy

* Chore: use new approach along with refactoring

* Chore: use new ldap interface for auth_proxy

* Chore: improve auth_proxy and subsequently ldap

* Chore: more of the refactoring bits

* Chore: address comments from code review

* Chore: more refactoring stuff

* Chore: make linter happy

* Chore: add cron dep for grafana enterprise

* Chore: initialize config package var

* Chore: disable gosec for now

* Chore: update dependencies

* Chore: remove unused module

* Chore: address review comments

* Chore: make linter happy

CVE-2019-5428
Vulnerable versions: < 3.4.0
Patched version: 3.4.0
A prototype pollution vulnerability exists in jQuery versions < 3.4.0 that
allows an attacker to inject properties on Object.prototype.

https://nvd.nist.gov/vuln/detail/CVE-2019-5428

Progress: #14714

Fixes #16627