refactoring changes from sequpgrade (endReturn, ...) and some modernizations

seqs/certbot.sh

@@ -12,7 +12,7 @@ seq_config() {
     # End if no configuration file exists
     dry || return 1
   fi
-  
+
   ## Apt cmdline option to suppress user interaction
   interactive || sq_aptOpt="-y"
 
@@ -28,7 +28,7 @@ step_1() {
   if [ "$(which lsb_release)" == "" ] ; then
     warning -e "Cannot detect OS. Assuming Ubuntu"
     osName="Ubuntu"
-  else  
+  else
     osName=$(lsb_release -is)
     distName=$(lsb_release -cs)
   fi
@@ -38,7 +38,7 @@ step_1() {
     osName="Ubuntu"
   fi
 
-  echo " [I] Detected OS: $osName $distName"
+  info "Detected OS: $osName $distName"
 
   if [ "$osName" == "Ubuntu" ] ; then
     exe apt-get update