add server/permission info in failed-mathjax dialog

It's now more clear that offline mathjax info is server-related.

IPython/frontend/html/notebook/static/js/notebookmain.js

@@ -1,131 +1,135 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // On document ready
 //============================================================================
 
 
 $(document).ready(function () {
     if (window.MathJax){ 
         // MathJax loaded
         MathJax.Hub.Config({
             tex2jax: {
                 inlineMath: [ ['$','$'], ["\\(","\\)"] ],
                 displayMath: [ ['$$','$$'], ["\\[","\\]"] ]
             },
             displayAlign: 'left', // Change this to 'center' to center equations.
             "HTML-CSS": {
                 styles: {'.MathJax_Display': {"margin": 0}}
             }
         });
     }else if (window.mathjax_url != ""){
         // Don't have MathJax, but should. Show dialog.
         var dialog = $('<div></div>')
             .append(
                 $("<p></p>").addClass('dialog').html(
-                    "Math/LaTeX equation rendering will be disabled."
+                    "Math/LaTeX rendering will be disabled."
                 )
             ).append(
                 $("<p></p>").addClass('dialog').html(
-                    "With a working internet connection, you can install a local copy" +
-                    " of MathJax for offline use with the following command at a Python" +
-                    " or IPython prompt:"
+                    "If you have administrative access to the notebook server and" +
+                    " a working internet connection, you can install a local copy" +
+                    " of MathJax for offline use with the following command on the server" +
+                    " at a Python or IPython prompt:"
                 )
             ).append(
                 $("<pre></pre>").addClass('dialog').html(
                     ">>> from IPython.external import mathjax; mathjax.install_mathjax()"
                 )
             ).append(
                 $("<p></p>").addClass('dialog').html(
-                    "This will try to install MathJax into the directory where you installed"+
-                    " IPython. If you installed IPython to a location that requires"+
+                    "This will try to install MathJax into the IPython source directory."
+                )
+            ).append(
+                $("<p></p>").addClass('dialog').html(
+                    "If IPython is installed to a location that requires" +
                     " administrative privileges to write, you will need to make this call as"+
                     " an administrator, via 'sudo'."
                 )
             ).append(
                 $("<p></p>").addClass('dialog').html(
-                    "Or you can instruct the notebook server to disable MathJax support altogether:"
+                    "When you start the notebook server, you can instruct it to disable MathJax support altogether:"
                 )
             ).append(
                 $("<pre></pre>").addClass('dialog').html(
                     "$ ipython notebook --no-mathjax"
                 )
             ).append(
                 $("<p></p>").addClass('dialog').html(
                     "which will prevent this dialog from appearing."
                 )
             ).dialog({
                 title: "Failed to retrieve MathJax from '" + window.mathjax_url + "'",
                 width: "70%",
                 modal: true,
             })
     }else{
         // No MathJax, but none expected. No dialog.
     }
     
     IPython.markdown_converter = new Markdown.Converter();
     IPython.read_only = $('meta[name=read_only]').attr("content") == 'True';
 
     $('div#header').addClass('border-box-sizing');
     $('div#main_app').addClass('border-box-sizing ui-widget ui-widget-content');
     $('div#notebook_panel').addClass('border-box-sizing ui-widget');
 
     IPython.layout_manager = new IPython.LayoutManager();
     IPython.pager = new IPython.Pager('div#pager', 'div#pager_splitter');
     IPython.left_panel = new IPython.LeftPanel('div#left_panel', 'div#left_panel_splitter');
     IPython.save_widget = new IPython.SaveWidget('span#save_widget');
     IPython.quick_help = new IPython.QuickHelp('span#quick_help_area');
     IPython.login_widget = new IPython.LoginWidget('span#login_widget');
     IPython.print_widget = new IPython.PrintWidget('span#print_widget');
     IPython.notebook = new IPython.Notebook('div#notebook');
     IPython.kernel_status_widget = new IPython.KernelStatusWidget('#kernel_status');
     IPython.kernel_status_widget.status_idle();
 
     IPython.layout_manager.do_resize();
 
     // These have display: none in the css file and are made visible here to prevent FLOUC.
     $('div#header').css('display','block');
 
     if(IPython.read_only){
         // hide various elements from read-only view
         IPython.save_widget.element.find('button#save_notebook').addClass('hidden');
         IPython.quick_help.element.addClass('hidden'); // shortcuts are disabled in read_only
         $('button#new_notebook').addClass('hidden');
         $('div#cell_section').addClass('hidden');
         $('div#config_section').addClass('hidden');
         $('div#kernel_section').addClass('hidden');
         $('span#login_widget').removeClass('hidden');
         // left panel starts collapsed, but the collapse must happen after
         // elements start drawing.  Don't draw contents of the panel until
         // after they are collapsed
         IPython.left_panel.left_panel_element.css('visibility', 'hidden');
     }
 
     $('div#main_app').css('display','block');
 
     // Perform these actions after the notebook has been loaded.
     // We wait 100 milliseconds because the notebook scrolls to the top after a load
     // is completed and we need to wait for that to mostly finish.
     IPython.notebook.load_notebook(function () {
         setTimeout(function () {
             IPython.save_widget.update_url();
             IPython.layout_manager.do_resize();
             IPython.pager.collapse();
             if(IPython.read_only){
                 // collapse the left panel on read-only
                 IPython.left_panel.collapse();
                 // and finally unhide the panel contents after collapse
                 setTimeout(function(){
                     IPython.left_panel.left_panel_element.css('visibility', 'visible');
                 }, 200);
             }
         },100);
     });
 
 });