moved all xcf files to the art/ directory
added readingmode_rmode.xcf/.png
updated dipylonreader.pro/.qrc
the 'reading mode' icon switches now between the three following modes : r[ead] mode, r[ead and]l[isten] mode, a[nalyse] mode
updated quick_dipylon.sh (dipylon > dipylonreader) and fixed a glitch by calling qmake
updated several files to avoid a messy situation