adding schema

java/info/kwarc/sally/comm/core/Heartbeatrequest.java

java/info/kwarc/sally/comm/core/Heartbeatresponse.java

java/info/kwarc/sally/comm/core/ObjectFactory.java

java/info/kwarc/sally/comm/core/Registerdocument.java

.../info/kwarc/sally/comm/core/Registerdocumentresponse.java

java/info/kwarc/sally/comm/core/package-info.java

java/info/kwarc/sally/comm/theo/ObjectFactory.java

java/info/kwarc/sally/comm/theo/Opentheowindow.java

java/info/kwarc/sally/comm/theo/package-info.java

schema/core.xsd

schema/theo.xsd