Supported renaming of ivoa schema name, fixed various bugs

TASMAN-core/src/main/java/it/inaf/ia2/tsm/Column.java

TASMAN-core/src/main/java/it/inaf/ia2/tsm/Schema.java

TASMAN-core/src/main/java/it/inaf/ia2/tsm/Table.java

TASMAN-core/src/main/java/it/inaf/ia2/tsm/TapSchema.java

...N-core/src/main/java/it/inaf/ia2/tsm/TapSchemaLoader.java

...core/src/main/java/it/inaf/ia2/tsm/TapSchemaSettings.java

...-core/src/main/java/it/inaf/ia2/tsm/UpdateOperations.java

...AN-core/src/main/java/it/inaf/ia2/tsm/datalayer/ADQL.java

...ore/src/main/java/it/inaf/ia2/tsm/datalayer/DBBroker.java

...main/java/it/inaf/ia2/tsm/datalayer/DBBrokerTemplate.java

...n/java/it/inaf/ia2/tsm/datalayer/mysql/MySQLDBBroker.java

...ava/it/inaf/ia2/tsm/datalayer/pgsql/PostgresDBBroker.java

...ore/src/main/java/it/inaf/ia2/tsm/model/SchemaModels.java

...src/main/resources/schema_definition/tap_schema-1-IA2.xml

...ore/src/main/resources/schema_definition/tap_schema-1.xml

...c/main/resources/schema_definition/tap_schema-1_1-IA2.xml

...e/src/main/resources/schema_definition/tap_schema-1_1.xml

TASMAN-core/src/test/java/it/inaf/ia2/tsm/TestAll.java

TASMAN-embedded/src/main/resources/app.properties

.../main/java/it/inaf/ia2/tsm/webapp/CredentialsEditing.java