More website tweaks (#1563)

## Description

- Add quickstart button to homepage
- Tweak meta for better URL previews
- Add a robots.txt file

## Type of change

- [x] 🗺️ Documentation

docs/docusaurus.config.js

@@ -164,7 +164,7 @@ const config = {
         {name: 'twitter:card', content: 'summary_large_image'},
         {name: 'twitter:site', content: '@corsobackup'},
         {name: 'twitter:title', content: 'Corso: Free, Secure, and Open-Source Backup for Microsoft 365'},
-        {name: 'twitter:description', content: 'Intro, Docs, and Blog for Corso, an open-source tool, that protects Microsoft 365 data by securely and efficiently backing up all business-critical data to object storage.'},
+        {name: 'twitter:description', content: 'Corso is an open-source tool that protects Microsoft 365 data by securely and efficiently backing up all business-critical data to object storage.'},
       ],
 
       prism: {

docs/src/components/parts/FirstSection.js

@@ -33,12 +33,18 @@ export default function FirstSection() {
             </p>
           </div>
 
-          <div className="mt-12 !z-10 mb-6">
+          <div className="mt-12 !z-10 mb-6 space-x-4">
+            <a
+              href="../docs/quickstart"
+              className="text-2xl !z-10 !no-underline hover:text-white py-2 px-6 font-bold btn bg-indigo-800 hover:bg-indigo-900 border-indigo-800 hover:border-indigo-900 text-white rounded-md"
+            >
+              Quickstart
+            </a>
             <a
               href="../docs/setup/download"
               className="text-2xl !z-10 !no-underline hover:text-white py-2 px-6 font-bold btn bg-indigo-800 hover:bg-indigo-900 border-indigo-800 hover:border-indigo-900 text-white rounded-md"
             >
-              Download Now
+              Download
             </a>
           </div>
 

docs/static/robots.txt

@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: