add api support for updating org identifier (#861)

* add api support for updating org identifier

* add identifier to response as well

* implement in EF repo

util/Migrator/DbScripts/2020-08-12_00_OrgIdentifierProc.sql

@@ -0,0 +1,20 @@
+IF OBJECT_ID('[dbo].[Organization_ReadByIdentifier]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[Organization_ReadByIdentifier]
+END
+GO
+
+CREATE PROCEDURE [dbo].[Organization_ReadByIdentifier]
+    @Identifier UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        *
+    FROM
+        [dbo].[OrganizationView]
+    WHERE
+        [Identifier] = @Identifier
+END
+GO