new: [monujo] always overwrite with specified app version

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

monujo/lib/common

@@ -8,10 +8,14 @@ CONFIGFILE="$LOCATION/config.json"
 
 
 monujo:code_init() {
+    if [ -e "$LOCATION/.version" ] && \
+           [ "$(cat "$LOCATION/.version")" == "$VERSION" ]; then
+        return 0
+    fi
+    [ -d "$LOCATION" ] && rm -rf "$LOCATION"
     mkdir -p "$LOCATION"
-    if dir_is_empty "$LOCATION"; then
     cd "$LOCATION"
-        info "First install, downloading '$SOURCE_URL'."
+    info "Downloading '$SOURCE_URL'."
     wget -q "$SOURCE_URL" -O file.tar.bz2 || {
         err "Couldn't download '$SOURCE_URL'."
         rm file.tar.bz2
@@ -19,8 +23,8 @@ monujo:code_init() {
     }
     tar xjf file.tar.bz2 &&
     rm file.tar.bz2 &&
-        chown root:root "$LOCATION" -R
-    fi
+    chown root:root "$LOCATION" -R &&
+    echo "$VERSION" > "$LOCATION/.version"
 }
 
 export MONUJO_OPTIONS=(