Extract constant information out of the getContact() function and make it public static properties of the class.

# 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

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.

Migrate hosted SP metadata to use the new getContact() helper function. Include also the contact information in SSP generated configuration.

Start using the new helper function for contact configuration validation in SAMLBuilder. Change the documentation to warn about upcoming changes.

composer: replace xmlseclibs svn source with our git copy

This mirrors the configuration used in simplesamlphp/saml2.
It lifts the requirement to have subversion present on your machine.

Merge branch 'spremote-privatekey' of https://github.com/dtsosie/simplesamlphp into dtsosie-spremote-privatekey

* feature/short-sso-trackid:
  Add the tracking identifier to the error message, so that we can track the logs and see what happened when someone gets this error.

Check that IdP names contain content before attempting translation.

Fixed a bunch of documentation typos

Fix a bunch of typos in the documentation of the consent module

aselect: remove check for nonexistent 'res' index in A-Select server's response. Look for 'uid' and 'organization' directly in the response array.

Add the tracking identifier to the error message, so that we can track the logs and see what happened when someone gets this error.

aggregator2: add filtering (by sets, as in the aggregator module) and entity exclusion (by entity ID). Both options can be set by request and as a default by configuration (per aggregate, not source). Both options accept multiple values (exclude several entity IDs, filter by several criteria). Results are cached according to the filtering and exclusion parameters.

getTranslation() will throw an unhandled exception when passed an
empty array, and there's no use in checking for translations of
empty stuff anyway.

Fixed some variable declarations and exception messages