modernize multiple seqs and fix deprecated use of endCheckEmpty

seqs/friendica.sh

@@ -15,7 +15,7 @@ seq_config() {
 step_20_info() {
   shift
   echo -n "Create a backup"
-  if [ $sq_config -ne 0 ] ; then
+  if (( sq_config )) ; then
     echo " at $FR_BACKUP"
   else
     echo
@@ -26,7 +26,7 @@ step_20_alias() { echo "backup"; }
 step_20() {
   shift
   local tempRoot=
-  if [ $sq_config -eq 0 ] ; then
+  if (( ! sq_config )) ; then
     error -e "No configuration file found"
     return 1
   fi
@@ -61,12 +61,13 @@ step_22_info() {
     if ! contextHelp ; then
       echo ": $(curl --silent "$latestUrl" | grep -Po '"tag_name": "\K.*?(?=")')"
     else
-      echo " [CUSTOM VERSION]"
+      echo
     fi
   else
     echo "Get version $1 from github"
   fi
 }
+step_22_options() { echo "[CUSTOM VERSION]"; }
 step_22_alias() { echo "upgrade"; }
 step_22() {
   shift # don't need step number