Initial aproach to handle jtables wich sources are vectorial layers
Created a form factory.

Added a factory for easily creating forms. We will need this
for creating vectorial subforms.
Vectorial table/subforms support finished.

Now we can add tables referencing other layers, which
will also open subforms.
Added most vectorial tables to Comunidades form.
Alphanumeric tables now work with default schema.

No specific schema is now required from the connection,
so it may work with the default one.
Fixed a recurring typo.

Also fixed a wrong package name.