Revert device id in jwt token and moved to reading from header. Added clear token by identifier API/repo/sproc so that token can be cleared after logout.

src/Sql/dbo/Stored Procedures/Device_ClearPushTokenByIdentifier.sql

@@ -0,0 +1,13 @@
+CREATE PROCEDURE [dbo].[Device_ClearPushTokenByIdentifier]
+    @Identifier NVARCHAR(50)
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    UPDATE
+        [dbo].[Device]
+    SET
+        [Identifier] = NULL
+    WHERE
+        [Identifier] = @Identifier
+END