Fix and improve language selection in grub

grub-cfg/grub.cfg

@@ -279,7 +279,7 @@ function boot_menu {
     }
     show_timezones
     show_keymaps
-    # show_languages
+    show_languages
     default=3
 }
 

grub-cfg/kernels.cfg

@@ -41,6 +41,7 @@ else
             title="$kopt";
         fi;
     done
+    if [ "x$def_bootlang" = "xde_DE" ]; then
       menuentry "Mit Open-Source Treibern starten" --class=@DIST_NAME@.@ARCH@ "$title" {# set arguments above with the editor
           source /boot/grub/locales/de_DE
           linux /boot/vmlinuz-$2 driver=free nouveau.modeset=1 i915.modeset=1 radeon.modeset=1
@@ -51,6 +52,7 @@ else
           linux /boot/vmlinuz-$2 driver=nonfree nouveau.modeset=0 i915.modeset=1 radeon.modeset=1
           initrd /boot/amd_ucode.img /boot/intel_ucode.img /boot/initramfs-@ARCH@.img
       }
+    else
       menuentry "Boot with open source drivers" --class=@DIST_NAME@.@ARCH@ "$title" {# set arguments above with the editor
           linux /boot/vmlinuz-$2 driver=free nouveau.modeset=1 i915.modeset=1 radeon.modeset=1
           initrd /boot/amd_ucode.img /boot/intel_ucode.img /boot/initramfs-@ARCH@.img
@@ -60,3 +62,4 @@ else
           initrd /boot/amd_ucode.img /boot/intel_ucode.img /boot/initramfs-@ARCH@.img
       }
     fi
+fi