[tools] testbot/web: Better document the job details page reloads.

[Francois Gouget]

Also use $SCRIPT_NAME instead of hardcoding the script name.

Signed-off-by: Francois Gouget 
---
 testbot/web/JobDetails.pl | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/testbot/web/JobDetails.pl b/testbot/web/JobDetails.pl
index 7e1df1ffa..ccd40443a 100644
--- a/testbot/web/JobDetails.pl
+++ b/testbot/web/JobDetails.pl
@@ -256,7 +256,11 @@ sub OnCancel($)
     return !1;
   }

-  exit($self->{EnclosingPage}->Redirect("/JobDetails.pl?Key=$JobId"));
+  # Ideally this would use something like GetMoreInfoLink() to rebuild a Get
+  # URL to preserve which logs and screenshots have been expanded. But the
+  # anchor would likely be lost anyway.
+  # So just do a basic reload to refresh the tasks' status.
+  exit($self->{EnclosingPage}->Redirect($ENV{"SCRIPT_NAME"} ."?Key=$JobId"));
 }

sub OnRestart($)
@@ -278,7 +282,10 @@ sub OnRestart($)
     return !1;
   }

-  exit($self->{EnclosingPage}->Redirect("/JobDetails.pl?Key=$JobId"));
+  # Reload to refresh the tasks' status. Note that all logs and screenshots
+  # have been cleared so there is no point specifying which one to open or
+  # adding an anchor.
+  exit($self->{EnclosingPage}->Redirect($ENV{"SCRIPT_NAME"} ."?Key=$JobId"));
 }

sub OnAction($$)