Refactoring: Default to "OpenConext EngineBlock" for mail from EB by default, instead of "SURFconext EngineBlock"
Refactor: Remove deprecated settings for file based attribute manipulation and static.openconext.org
Refactor: Removed concept of 'dynamic environments' for assets, and introduced config setting: 'dynamicAssets' which defaults to false
Refactor: replaced surfconext.termsOfUser by openconext.termsOfUse