Rename all nonfree files (forbidden character)

app/src/main/res/drawable-hdpi/nonfree_tinder.png

app/src/main/res/drawable-hdpi/nonfree_twitter.png

app/src/main/res/drawable-hdpi/nonfree_waze.png

app/src/main/res/drawable-hdpi/nonfree_whatsapp.png

app/src/main/res/drawable-hdpi/nonfree_youtube.png

app/src/main/res/drawable-mdpi/nonfree_arte.png

app/src/main/res/drawable-mdpi/nonfree_badoo.png

app/src/main/res/drawable-mdpi/nonfree_bouyguestelecom.png

app/src/main/res/drawable-mdpi/nonfree_creditdunord.png

app/src/main/res/drawable-mdpi/nonfree_famileo.png

app/src/main/res/drawable-mdpi/nonfree_fdj.png

app/src/main/res/drawable-mdpi/nonfree_fip.png

app/src/main/res/drawable-mdpi/nonfree_gmail.png

app/src/main/res/drawable-mdpi/nonfree_googlemaps.png

app/src/main/res/drawable-mdpi/nonfree_googleplaystore.png

app/src/main/res/drawable-mdpi/nonfree_happn.png

app/src/main/res/drawable-mdpi/nonfree_ilevia.png

app/src/main/res/drawable-mdpi/nonfree_instagram.png

app/src/main/res/drawable-mdpi/nonfree_lastfm.png

app/src/main/res/drawable-mdpi/nonfree_leboncoin.png