Added support for dutch filenames

"Bestand:" is accepted by the regex.
Also enabled svg images
Merge remote-tracking branch 'kenpratt/master' into feature/dutchWikipediaSupport

Conflicts:
	lib/wikipedia/page.rb
added support for SVG files
Merge branch 'feature/dutchWikipediaSupport' into develop
Merge branch 'develop'

Conflicts:
	lib/wikipedia/page.rb