Change dates of festival

This Festival took place on week later:
http://www.setlist.fm/festival/2008/dong-open-air-2008-5bd687e0.html

Sources:
https://en.wikipedia.org/wiki/Dong_Open_Air
http://www.sabaton.net/sabaton-on-tour/

this festival: http://www.setlist.fm/setlist/anouk/2015/buitenvest-hulst-netherlands-bc9d15e.html

should be 2015 instead of 2014!!!

• Night of the Proms should be removed as festival http://www.setlist.fm/setlist/anouk/2005/sportpaleis-antwerp-belgium-13d5c56d.html