INFRA-102 - Consolidate Drupal single-site/multi-site installers
INFRA-102 - civibuild - Accept optional id for subsites in multisite build
INFRA-102 - app/config - Update all Drupal-based configs for multisite
INFRA-102 - Fix generation of Drupal sitedir when using default port
Merge pull request #31 from totten/master-training

INFRA-102 - Add support for installing subsites within a multisite configuration