Few changes
- Authentication endpoint of THX got changed to a different URL, so we updated this.
- Set a timeout of 30 on the guzzle client to make sure it won't take too long
- Alter the signup method where it would add the user to the pool which now will be done automatically in the signup call if it contains an asset pool header
- Remove obsolete call patchrewards
- When awarding tokens to a user and it's not a member of the pool try to add them first before failing
