* changes:
AccountSshKey: Remove dependency to gwtorm
Don't use Account class in GWT UI code
Move regular expressions for user name from Account to ExternalId
Account.Id: Return Optional from parse method
ChangeField: Ignore invalid reviewer field values and log an error
ChangeData: Expect that Account.Id.fromRefPart may return null
AccountResolver: Inside of map methods use the id from the provided account
8972f427fc