[TAP] Remove debugging message from the modified cos library
[TAP] Add missing javadoc (for the function ServiceConnection.getNbMaxAsyncJob).
[TAP] Add old TAPColumn constructors (for a minimum backward compatibility).
[TAP] Fix bug: test NULL before formatting a string/text (for an XML document).
[TAP,UWS] Manage thrown Error properly in synchronous and asynchronous jobs execution + Modify some log messages + Add log messages in JDBCConnection (for add and drop uploaded tables).