Read domain variables from configuration file

src/freedombone-utils-android

                 { echo '    {';
                   echo "      \"name\": \"${app_name}\",";
                   echo "      \"short_description\": \"$SHORT_DESCRIPTION\",";
-                  echo "      \"description\": \"$DESCRIPTION))\",";
+                  echo "      \"description\": \"$DESCRIPTION\",";
                   echo "      \"icon_url\": \"$ICON_URL\",";
                   echo "      \"clients\": ["; } >> "$plinth_api"
 
+                read_config_param "${app_name_upper}_DOMAIN_NAME"
                 domain_name=$(("${app_name_upper}_DOMAIN_NAME"))
-                if [[ "$domain_name" && "$app_name" != 'matrix' ]]; then
+                if [[ "$domain_name" != "0" && "$app_name" != 'matrix' ]]; then
                     { echo '        {';
                       echo "          \"name\": \"${app_name}\",";
                       echo "          \"platforms\": [";
                 fi
 
                 if [ "$MOBILE_APP_URL" ]; then
-                    if [[ "$domain_name" && "$app_name" != 'matrix' ]]; then
+                    if [[ "$domain_name" != "0" && "$app_name" != 'matrix' ]]; then
                         echo ',' >> "$plinth_api"
                     fi
                     { echo '        {';