Merge branch 'version/2.5'

* version/2.5:
  bugfix: add import of Pod::Usage to init_pipeline.pl
  bugfix: gnuplot requires zero or both values to be set for a time axis, but not just one
  Ranges shorter than 6 days will still show each date twice, so we still need to show the timestamp

scripts/generate_timeline.pl

@@ -337,7 +337,7 @@ sub main {
 
     my $data_start = Time::Piece->strptime( $xdata[0] , '%Y-%m-%dT%H:%M:%S');
     my $data_end   = Time::Piece->strptime( $xdata[-1], '%Y-%m-%dT%H:%M:%S');
-    my $xlabelfmt  = $data_end-$data_start >= 3*24*3600 ? '%b %d' : '%b %d\n %H:%M';
+    my $xlabelfmt  = $data_end-$data_start >= 6*24*3600 ? '%b %d' : '%b %d\n %H:%M';
 
     # The main Gnuplot object
     my $chart = Chart::Gnuplot->new(
@@ -360,7 +360,7 @@ sub main {
         terminal => $terminal_mapping{$gnuplot_terminal},
         ylabel => $allowed_modes{$mode},
         yrange => [$pseudo_zero_value, undef],
-        ($start_date || $end_date) ? (xrange => [$start_date, $end_date]) : (),
+        ($start_date && $end_date) ? (xrange => [$start_date, $end_date]) : (),
     );
     $chart->plot2d(@datasets);
 

scripts/init_pipeline.pl

@@ -14,6 +14,7 @@ BEGIN
 }
 
 use Getopt::Long qw(:config pass_through no_auto_abbrev);
+use Pod::Usage;
 use Bio::EnsEMBL::Hive::Utils ('load_file_or_module');
 use Bio::EnsEMBL::Hive::Scripts::InitPipeline;