Sequencer new option to open sequence config file when initialised using initSeqConfig

Sequences with exit in step_config, changed to return to support opening config file on first run

seqs/aria2.sh

@@ -27,7 +27,7 @@ step_config() {
     CONFIG=1
   else
     # End if no configuration file exists
-    [ $DRY -eq 0 ] && exit 1
+    [ $DRY -eq 0 ] && return 1
   fi
   [ $QUIET -ne 0 ] && aptOpt="-y"
 }