add helper script to update po files from pot

update-po.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# this script runs msgmerge to update the po files in line with the latest version of the pot files
+# normally weblate does this, but if there are weblate problems or manual intervention is needed this can be useful
+
+set -e
+
+for locale_dir in locales/* ; do
+
+    if [ "$locale_dir" == "locales/pot" ] ; then
+        # skip
+        continue
+    fi
+
+    lang_code=$(basename "$locale_dir")
+    d=$locale_dir/LC_MESSAGES
+
+    echo "LANG: $lang_code $locale_dir - merge $(echo $po_files | wc -w ) files"
+    msgmerge -U $d/docs.po locales/pot/docs.pot
+done