Update to support haskell syntax highlighting in code block

public/js/extra.js

@@ -2,6 +2,7 @@ require('prismjs/themes/prism.css');
 
 var Prism = require('prismjs');
 require('prismjs/components/prism-wiki');
+require('prismjs/components/prism-haskell');
 var hljs = require('highlight.js');
 var PDFObject = require('pdfobject');
 var S = require('string');
@@ -484,6 +485,11 @@ function finishView(view) {
                     var result = {
                         value: code
                     };
+                } else if (reallang == "haskell") {
+                    code = S(code).unescapeHTML().s;
+                    var result = {
+                        value: Prism.highlight(code, Prism.languages.haskell)
+                    };
                 } else if (reallang == "tiddlywiki" || reallang == "mediawiki") {
                     code = S(code).unescapeHTML().s;
                     var result = {

public/js/index.js

@@ -213,7 +213,7 @@ var cursorMenuThrottle = 50;
 var cursorActivityDebounce = 50;
 var cursorAnimatePeriod = 100;
 var supportContainers = ['success', 'info', 'warning', 'danger'];
-var supportCodeModes = ['javascript', 'htmlmixed', 'htmlembedded', 'css', 'xml', 'clike', 'clojure', 'ruby', 'python', 'shell', 'php', 'sql', 'coffeescript', 'yaml', 'pug', 'lua', 'cmake', 'nginx', 'perl', 'sass', 'r', 'dockerfile', 'tiddlywiki', 'mediawiki'];
+var supportCodeModes = ['javascript', 'htmlmixed', 'htmlembedded', 'css', 'xml', 'clike', 'clojure', 'ruby', 'python', 'shell', 'php', 'sql', 'haskell', 'coffeescript', 'yaml', 'pug', 'lua', 'cmake', 'nginx', 'perl', 'sass', 'r', 'dockerfile', 'tiddlywiki', 'mediawiki'];
 var supportCharts = ['sequence', 'flow', 'graphviz', 'mermaid'];
 var supportHeaders = [
     {

public/vendor/codemirror/compress.sh

@@ -43,6 +43,7 @@ mode/python/python.js \
 mode/shell/shell.js \
 mode/php/php.js \
 mode/sql/sql.js \
+mode/haskell/haskell.js \
 mode/coffeescript/coffeescript.js \
 mode/yaml/yaml.js \
 mode/pug/pug.js \