provisioning: adds setting to disable dashboard deletes

closes #10828

this features was never intended for production.

* provisioning: uses unix epoch timestamps.

* added AWS/States

* added Rekognition

* initial fixes for dashboard permission acl list query, fixes #10864

* permissions: refactoring of acl api and query

if the sql query failed has is false and the method will return
m.ErrDataSourceNotFound which is incorrect. We now return the
correct error message from the query

ref #10843

Change naming format to camelCase for provisioning configs

* tests: experiment with api tests

* api tests are getting nice

* api: api testing ready for feedback

Duplicate typo in docs fixed

The import statement relative to base seems to confuse sass if there is
a colon (:) in the path name.

Fixes: #10866

Signed-off-by: Jan Fajerski <jfajerski@suse.com>

* provisioning: Warns the user when uid or title is re-used.

Closes #10880

Minor typo fix

Minor typo fix

* new dashboard is now hidden from viewer, fixes #10815

* changed orgRole to isEditor

* removed unused import

* added contextSrv mock to search.jest

Support deleting provisioned dashboards when file is removed