__nextcloud: completly respect --install-only parameter

This commit changes the manifest to do not check for too low versions
and does not download and unpack a tarball if available if the parameter
--install-only is set. This should make it useable now.

Also, a short message change to match the manual.

type/__nextcloud/gencode-remote

@@ -187,7 +187,7 @@ if [ -s "$__object/files/conf-cmds" ]; then
     printf "SU\n"
 
     # print a message
-    echo config >> "$__messages_out"
+    echo configured >> "$__messages_out"
 fi
 
 

type/__nextcloud/manifest

@@ -94,8 +94,12 @@ nextcloud_uri="https://download.nextcloud.com/server/releases/nextcloud-${versio
 nextcloud_sum="${nextcloud_uri}.sha256"
 
 
-# Only check if there is a current installation
+# Check if there is a current installation. It depends where the upstream
+# tarball should be unpacked (directly or moved in a later stage).
 if [ "$version_is" ]; then
+    # Only set and check the version if a upgrade is allowed.
+    #  if this block will be skipped, no upgrade will be done
+    if ! [ -f "$__object/parameter/install-only" ]; then
         # Block downgrades as there are may caused from the automatic upgrader
         # if the current version is higher than the version that should be installed
         if version_ge "$version_is" "$version_should"; then
@@ -108,13 +112,15 @@ if [ "$version_is" ]; then
 
         # Set destination to a temporary directory
         destination="$webroot/.$__object_id"
+    fi
 else
     # Set destination to the real destination
     destination="$webroot/$__object_id"
 fi
 
-# Upgrade the nextcloud version
-if [ "$version_is" != "$version_should" ]; then
+# Install/Upgrade the nextcloud version if there is a destination set.
+#  it checks if it is necessary and intended to upgrade
+if [ "$destination" ] && [ "$version_is" != "$version_should" ]; then
     updatedir="$( dirname "$installdir" )"
 
     # Be sure the parent directory exists for installation