added test to try solving qrcode issue with all images
currently simplifying imgReplacer
removed test for functionality that will be removed
removed functionality that consisted in using the "img" tag to replace images, instead of using qrcodes
moved the qrCode test outside of the imgReplacer class (and into the XmlReplacer)
remove nesting inside imgReplacer@replaceImage
removed nesting from imgReplacer@replaceImage
imgReplacer@replaceImager is nearly flat (no indents anymore)