Makefile: Set permissions of font and image directories

install-font:

	@echo installing fonts to ${font_dir}

	@mkdir -p ${font_dir}

	@chmod 755 ${font_dir}

	@cp share/fonts/* ${font_dir}

	@chmod 644 ${font_dir}/*

install-img:

	@echo installing images to ${image_dir}

	@mkdir -p ${image_dir}

	@chmod 755 ${image_dir}

	@cp share/images/* ${image_dir}

	@chmod 644 ${image_dir}/*