Merge branch 'f-entity-id' into 'dev'

src/main/java/org/caosdb/server/FileSystem.java

src/main/java/org/caosdb/server/database/DatabaseUtils.java

...end/implementation/MySQL/MySQLDeleteEntityProperties.java

...backend/implementation/MySQL/MySQLDeleteSparseEntity.java

...tabase/backend/implementation/MySQL/MySQLGetChildren.java

...ckend/implementation/MySQL/MySQLGetDependentEntities.java

...tabase/backend/implementation/MySQL/MySQLGetIDByName.java

...end/implementation/MySQL/MySQLGetUpdateableChecksums.java

...end/implementation/MySQL/MySQLInsertEntityProperties.java

...base/backend/implementation/MySQL/MySQLInsertParents.java

...d/implementation/MySQL/MySQLInsertTransactionHistory.java

...database/backend/implementation/MySQL/MySQLIsSubType.java

.../backend/implementation/MySQL/MySQLRegisterSubDomain.java

...tabase/backend/implementation/MySQL/MySQLRetrieveAll.java

...se/backend/implementation/MySQL/MySQLRetrieveParents.java

...backend/implementation/MySQL/MySQLRetrieveProperties.java

...mentation/MySQL/MySQLRetrieveQueryTemplateDefinition.java

...ckend/implementation/MySQL/MySQLRetrieveSparseEntity.java

...end/implementation/MySQL/MySQLRetrieveVersionHistory.java

...mplementation/MySQL/MySQLSetFileCheckedTimestampImpl.java