Fix add lang to handle js as well

scripts/add-lang

@@ -2,6 +2,7 @@
 
 set -e
 
-./manage.py makemessages -l $1 -i 'repos/*'
+./manage.py makemessages -l $1 -i 'repos/*' -i 'docs/*'
+./manage.py makemessages -l $1 -i 'repos/*' -i 'docs/*' -d djangojs
 git add locale/$1/
 git commit -m "Added $1 language"