change the timing of creating a token for serviceSubject
By this change, we can use TransCellAccessToken in _p.as('serviceSubject').cell('othercell') and AccountAccessToken in _p.as('serviceSubject').cell().
For issue #24
set expiresIn, refreshToken and refreshExpiresIn as token information
Note: This PR needs #23 and personium/personium-client-java#12 to be built successfully.
For issue #20
For issue #24
Note: This PR needs #23 and personium/personium-client-java#12 to be built successfully.