So that the readme's can be published on Grafana.com

closes #10829

dashboard: whitelist allowed chars for uid

ref #10813

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