As discussed at https://www.flagsarenotlanguages.com/blog/ and https://ux.stackexchange.com/questions/2472/how-to-graphically-represent-a-language Flags don't correspond to languages very well in many cases. Don't add them to our language list. Add the Ioninc "language" icon from https://github.com/ionic-team/ionicons and use it for the general "Use system setting" language item. Remove an unneeded include.
The "image" directory contains resource compiler assets and other application resources, so name it "resources."