Fix display bugs in the error message for the job viewer analytics.

[jpwhite4]

The error messages in the job viewer chart analytics had two problems.

1. there was no word wrapping enabled so the text would be truncated if the browser
   window was too small.

2. the text was not updated on a resize event. An example of the text display after a window
   maximise is shown below.

This update fixes the word wrap and ensures that the text is re-rendered if the window is resized.

I did a quick test for memory leaks by adding the following to the JobPanel.

diff --git a/share/html/gui/js/modules/job_viewer/JobViewer.js b/share/html/gui/js/modules/job_viewer/JobViewer.js
index bc8fcf6..2af7106 100644
--- a/share/html/gui/js/modules/job_viewer/JobViewer.js
+++ b/share/html/gui/js/modules/job_viewer/JobViewer.js
@@ -798,6 +798,12 @@ XDMoD.Module.JobViewer = Ext.extend(XDMoD.PortalModule, {
                         var success = exists(data) && exists(data.success) && data.success;
                         if (success) {
                             parent.fireEvent('update_analytics', data.data, true);
+
+                            var task = new Ext.util.DelayedTask(function () {
+                                parent.fireEvent('update_analytics', data.data, true);
+                                task.delay(2000);
+                            });
+                            task.delay(2000);
                         }
                     },
                     failure: function (data) {

and then leaving it to run on Firefox Linux over lunch. The memory profiler in the dev tools showed that the memory usage on the page had not changed by much.