Fix broken links and duplicate IDs on fleetdm.com/docs (#2426)

* update heading renderer, fix links to blog.fleetdm.com

* inverted conditional, using ensureUniq

website/api/helpers/strings/to-html.js

@@ -75,8 +75,15 @@ module.exports = {
     };
     if (inputs.addIdsToHeadings === true) {
       var headingRenderer = new marked.Renderer();
+      var headingsRenderedOnThisPage = [];
       headingRenderer.heading = function (text, level) {
-        var headingID = _.kebabCase(text);
+        var headingID = _.kebabCase(_.unescape(text).replace(/[\’\']/g, ''));
+        if(!_.contains(headingsRenderedOnThisPage, headingID)){
+          headingsRenderedOnThisPage.push(headingID);
+        } else {
+          headingID = sails.helpers.strings.ensureUniq(headingID, headingsRenderedOnThisPage);
+          headingsRenderedOnThisPage.push(headingID);
+        }
         return '<h'+level+' class="markdown-heading" id="'+headingID+'">'+text+'<a href="#'+headingID+'" class="markdown-link"></a></h'+level+'>\n';
       };
       markedOpts.renderer = headingRenderer;

website/scripts/build-static-content.js

@@ -229,10 +229,12 @@ module.exports = {
                 // Check if this is an external link (like https://google.com) but that is ALSO not a link
                 // to some page on the destination site where this will be hosted, like `(*.)?fleetdm.com`.
                 // If external, add target="_blank" so the link will open in a new tab.
-                let isExternal = ! hrefString.match(/^href=\"https?:\/\/([^\.]+\.)*fleetdm\.com/g);// « FUTURE: make this smarter with sails.config.baseUrl + _.escapeRegExp()
+                // Note: links to blog.fleetdm.com will be treated as an external link.
+                let isExternal = ! hrefString.match(/^href=\"https?:\/\/([^\.|blog]+\.)*fleetdm\.com/g);// « FUTURE: make this smarter with sails.config.baseUrl + _.escapeRegExp()
                 // Check if this link is to fleetdm.com or www.fleetdm.com.
                 let isBaseUrl = hrefString.match(/^(href="https?:\/\/)([^\.]+\.)*fleetdm\.com"$/g);
                 if (isExternal) {
+
                   return hrefString.replace(/(href="https?:\/\/([^"]+)")/g, '$1 target="_blank"');
                 } else {
                   // Otherwise, change the link to be web root relative.