WIP: String IDs

...n/java/org/caosdb/server/database/BackendTransaction.java

...ackend/implementation/MySQL/MySQLGetFileRecordByPath.java

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

...backend/implementation/MySQL/MySQLInsertSparseEntity.java

...ckend/implementation/MySQL/MySQLRetrieveCurrentMaxId.java

...se/backend/implementation/MySQL/MySQLSetFileChecksum.java

...implementation/MySQL/MySQLSetQueryTemplateDefinition.java

...database/backend/interfaces/RetrieveCurrentMaxIdImpl.java

...er/database/backend/transaction/RetrieveCurrentMaxId.java

src/main/java/org/caosdb/server/entity/Entity.java

src/main/java/org/caosdb/server/entity/EntityID.java

src/main/java/org/caosdb/server/entity/EntityIdRegistry.java

.../caosdb/server/entity/container/TransactionContainer.java

...ain/java/org/caosdb/server/jobs/core/EntityIdHandler.java

...va/org/caosdb/server/jobs/core/ProcessNameProperties.java

src/main/java/org/caosdb/server/query/Query.java

src/main/java/org/caosdb/server/transaction/UpdateACL.java

.../java/org/caosdb/server/transaction/WriteTransaction.java

.../caosdb/server/transaction/WriteTransactionInterface.java