fiji_scripts: enhance logging

logger.conf

+layout_class = Log::Log4perl::Layout::PatternLayout
+# layout_class = Log::Log4perl::Layout::SimpleLayout
+layout_pattern = %d{yyyy-MM-dd HH:mm:ss.SSS} %p - %m (%F:%L> %M)%n
+
 log4perl.rootLogger                  = TRACE, logfile, screen
 
 log4perl.appender.screen             = Log::Log4perl::Appender::Screen
 log4perl.appender.screen.stderr      = 0
 log4perl.appender.screen.Threshold   = INFO
-log4perl.appender.screen.layout      = Log::Log4perl::Layout::SimpleLayout
+log4perl.appender.screen.layout = ${layout_class}
+log4perl.appender.screen.layout.ConversionPattern = ${layout_pattern}
 
 log4perl.appender.logfile            = Log::Log4perl::Appender::File
 log4perl.appender.logfile.Threshold  = TRACE
-log4perl.appender.logfile.filename   = fiji_download.log
+log4perl.appender.logfile.filename   = sub { $0 =~ s/.pl/.log/r; }
 log4perl.appender.logfile.mode       = append
-log4perl.appender.logfile.layout     = Log::Log4perl::Layout::SimpleLayout
+log4perl.appender.logfile.layout = ${layout_class}
+log4perl.appender.logfile.layout.ConversionPattern = ${layout_pattern}