Added arraysize support, set multicolumn layout in addable modals

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

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

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

...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/test/java/it/inaf/ia2/tsm/TestAll.java

...src/main/java/it/inaf/ia2/tsm/webapp/TapSchemaLoader.java

TASMAN-webapp/src/main/webapp/resources/css/style.css

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