Invert logic

src/freedombone-addremove

     read_config_param ONION_ONLY
 
     if [[ "$ONION_ONLY" != 'no' ]]; then
-        if ! grep -q "NOT_ON_ONION=1" "/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-${app_name}"; then
+        if grep -q "NOT_ON_ONION=1" "/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-${app_name}"; then
             echo "0"
             return
         fi