Built static site

Signed-off-by: Dimitris Kolovos <dimitris.kolovos@york.ac.uk>

Author: kolovos

doc/articles/playground/index.html

@@ -1858,6 +1858,10 @@ <h2 id="emfatic-metamodels-in-the-playground">Emfatic Metamodels in the Playgrou
 <h2 id="save-and-share-your-work">Save and share your work<a class="headerlink" href="#save-and-share-your-work" title="Permanent link">&para;</a></h2>
 <p>To share a snapshot of your work, click the <code>Share Snapshot</code> button. This will create a short link that you can copy to your clipboard. Please note that the contents of the editors <strong>will be stored in the back-end of the Epsilon Playground</strong> so that they can be retrieved when you visit that link again later.</p>
 <p>To start a live sharing session, click the <code>Live Share</code> button. This will create a link that you can share with others to collaborate with them in real-time. </p>
+<div class="admonition warning">
+<p class="admonition-title">No long-term availability guarantees</p>
+<p>Snapshots are stored in an AWS bucket. While there is no expiration policy, we <b>cannot guarantee</b> their long-term availability. Live sharing sessions are <b>memory-based and are lost</b> every time the Playgroung's <a href="https://github.com/epsilonlabs/yjs-websocket-nginx-docker">collaboration server</a> restarts. Thefore live sharing should be used <b>for ephemeral collaboration only</b>. For long-term storage, please download a copy of your work as discussed below.</p>
+</div>
 <h2 id="download-your-work">Download your work<a class="headerlink" href="#download-your-work" title="Permanent link">&para;</a></h2>
 <p>To download a zipped archive of your work, click the <code>Download</code> button. Depending on your selection, the zipped archived will contain the model management program(s), the models and metamodels of the example, a <code>readme.md</code> file with instructions as well as:</p>
 <ul>

playground/dist/bundle.js

@@ -17,8 +17,8 @@ class LiveShareDialog {
                 title: "Live Sharing",
                 content: "<p>You can invite others to join this session by sharing " + 
                     //"<input style='width:100%' value='" + liveShareManager.getShareURL() + "'>",
-                    "<a href='" + liveShareManager.getShareURL() + "'>this link</a> with them." ,
-                    
+                    "<a href='" + liveShareManager.getShareURL() + "'>this link</a> with them. " +
+                    "Please note that live sharing should be used for <a href='https://eclipse.dev/epsilon/doc/articles/playground/#save-and-share-your-work' target='_blank'>ephemeral collaboration only</a>.",
                 actions: [
                     {
                         caption: "Copy Link to Clipboard",

playground/dist/bundle.js.map

@@ -131,7 +131,7 @@ function copyShortenedLink(event) {
                 Metro.notify.killAll();
                 Metro.dialog.create({
                     title: "Share link",
-                    content: "<p>The link below contains a snapshot of the contents of all the editors in the playground. Anyone who visits this link should be able to view and run your example.</p><br/> <input style='width:100%' value='" + baseUrl + "?" + json.shortened + "'>",
+                    content: "<p>The link below contains a snapshot of the contents of all the editors in the playground. Anyone who visits this link <a href='https://eclipse.dev/epsilon/doc/articles/playground/#save-and-share-your-work' target='_blank'>should be able</a> to view and run your example. </p><br/> <input style='width:100%' value='" + baseUrl + "?" + json.shortened + "'>",
                     closeButton: true,
                     actions: [
                     {