[TAP,ADQL] Improve and remake a part of the database connection. Missing javadoc has been added when missing in the modified tables.

[TAP] Remove all generic types + Delete specific (for ResultSet) output formatters + Modify the main output formatter

[TAP] Improve TableIterator + Adapt ResultSetTableIterator (particularly because of the last commit about TAPType and VotType) + Add a TableIterator for VOTable input: VOTableIterator + Add its JUnit test case

TAP: Test better the JDBC connection URL: several syntaxes are possible. Here, the following syntax did not work before this correction: jdbc:postgresql:database (only if it is a local database). Only jdbc:postgresql://host/database and jdbc:postgresql://host:port/database worked!
TODO Parsing of JDBC connection URL should rather be checked again!