Added support for PGSPhere data types

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

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

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

...core/src/main/java/it/inaf/ia2/tsm/model/TypeMapping.java

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

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

TASMAN-core/src/main/resources/sql_type_mapping.xml

...ain/java/it/inaf/ia2/tsm/webapp/TapSchemaEditingBean.java

TASMAN-webapp/src/main/webapp/tapSchemaEditing.xhtml