Merge branch 'mwessel/gitlab-ce-configure-protection' into 'master'

CHANGELOG

app/controllers/admin/application_settings_controller.rb

app/models/application_setting.rb

app/services/git_push_service.rb

app/views/admin/application_settings/_form.html.haml

config/initializers/1_settings.rb

...e/20150125163100_add_default_branch_protection_setting.rb

db/schema.rb

lib/gitlab/access.rb

lib/gitlab/current_settings.rb

spec/models/application_setting_spec.rb

spec/services/git_push_service_spec.rb