Enabled multiple options to make markdown consistent with github

Tables, simple line breaks, strikethroug, tasklists, simplifiedAutoLink, pareImgDimensions, github @ mentions

Author: lupuleasa-core

opengrok-web/src/main/webapp/js/utils-0.0.24.js

@@ -1498,6 +1498,13 @@ function init_markdown_converter() {
                     var $dataMarkdownDownloadEl = $(this)
                     if (converter === null) {
                         converter = new showdown.Converter();
+                        converter.setOption('tables', true);
+						converter.setOption('simpleLineBreaks', true);
+						converter.setOption('strikethrough', true);
+						converter.setOption('tasklists', true);
+						converter.setOption('simplifiedAutoLink', true);
+						converter.setOption('parseImgDimension', true);
+						converter.setOption('ghMentionsLink', true)
                     }
 
                     $.ajax({