Allow personal information to be retrieved in a readonly transaction

The only method for retrieving a user's profile, also known as PersonalInformation or UserInfo, is to call one of the getPersonalInformation methods on the PersonalInformationManager. All these methods call through to a getOrCreate method, which creates the PersonalInformationManager for a User who exists but has no PersonalInformation object yet. In CONF-16601 that manager's transaction proxy settings were changed so that the get methods would not invoke a readonly transaction. This was necessary.

Ideally, however, it should be possible to use a readonly transaction to retrieve the personal information, since this can improve performance.