patch 8.1.0108: no Danish translations

Problem:    No Danish translations.
Solution:   Add Danish message translations. (closes #3073)  Move list of
            languages to a common makefile.
diff --git a/src/version.c b/src/version.c
index e51addc..a2363e2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    108,
+/**/
     107,
 /**/
     106,