huge restructure to give flexibility with blog posts and mobile layouts

.eleventy.js

@@ -4,6 +4,16 @@ module.exports = function (eleventyConfig) {
   eleventyConfig.addPassthroughCopy("./src/_assets/fonts");
   eleventyConfig.addPassthroughCopy("./src/_assets/js");
 
+  eleventyConfig.addCollection("tagsList", function(collectionApi) {
+    const tagsList = new Set();
+    collectionApi.getAll().map( item => {
+        if (item.data.tags) { // handle pages that don't have tags
+            item.data.tags.map( tag => tagsList.add(tag))
+        }
+    });
+    return tagsList;
+  });
+
   return {
     passthroughFileCopy: true,
     dir: {