[Documentation] "Reading from database".java should mention that "database.setName(..)" should be called in order to generate reloadable XML

[Thorbjørn Ravn Andersen]

I just noticed that the method described to read from a database, put 
together with the method to write to XML does not produce XML-files that 
can be read in again with the method to read from xml.

I found that a "database.setName("whatever")" had to be called before 
writing to xml to remidy this.

--
 Thorbjørn