Add a new class with helpers for handling configuration objects related to metadata.
Start using the new helper function for contact configuration validation in SAMLBuilder. Change the documentation to warn about upcoming changes.
Start using the helper function getContact() prior to all calls to addContact().
Migrate hosted SP metadata to use the new getContact() helper function. Include also the contact information in SSP generated configuration.
Migrate hosted IdP metadata to use the new getContact() helper function. Include also the contact information in SSP generated configuration. Honour contact configuration in hosted metadata, the same way as in hosted SP metadata. Solve #101.
Merge branch 'master' of github.com:simplesamlphp/simplesamlphp

# By Thijs Kinkhorst
# Via Jaime Pérez (1) and Thijs Kinkhorst (1)
* 'master' of github.com:simplesamlphp/simplesamlphp:
  composer: replace xmlseclibs svn source with our git copy