idp_cas: when the service url already contains a ? character, use a & instead of ? to add new parameters
idp_cas: when the service url already contains a ? character, use a & instead of ? to add new parameters

Sponsored by http://www.ill.eu/ (Institut Laue-Langevin)

pu239ppy/authentic2,adieu/authentic2,pu239ppy/authentic2,adieu/authentic2,BryceLohr/authentic,adieu/authentic2,pu239ppy/authentic2,BryceLohr/authentic,adieu/authentic2,BryceLohr/authentic,BryceLohr/authentic,pu239ppy/authentic2