bugfixing: fixed small errors in annotation module

...n/src/main/java/unipotsdam/gf/mysql/MysqlConnectImpl.java

...java/unipotsdam/gf/core/database/MysqlGeneralConnect.java

...n/src/test/java/unipotsdam/gf/core/database/UpdateDB.java

gemeinsamforschen/src/test/resources/database/fltrail.sql