Rename all nonfree files (forbidden character)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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