Text API & Canonical Text Service: DHD conference contributions DB + SRC

Information Database as .sql and sourcecode as PHP. Sourcecode state at publication date. Online as part of Text Service Infrastructure at https://urncts.eu/ Online version and current sourcecode may differ from this state of upload. For current sourcecode see https://bitbucket.org/jtiepmar/workspace/projects/CTS. For current database dump see https://urncts.eu/. For source documents see original editions at https://github.com/DHd-Verband.