Revert "Move logic for shortid to the server"

This reverts commit 6d0793a.

Author: CompuIves

packages/app/src/app/pages/Sandbox/index.js

@@ -45,7 +45,15 @@ class SandboxPage extends React.Component {
   }
 
   fetchSandbox = () => {
-    const id = this.props.match.params.id;
+    let id = this.props.match.params.id;
+
+    // If the id is in the form of "slugified-title-shortid" we can take the last
+    // shortid and get the data with that. This solves the problem with urls becoming
+    // invalid after giving a sandbox a new title.
+    const split = id.split('-');
+    if (!id.startsWith('github') && split.length > 1) {
+      id = split.pop();
+    }
 
     this.props.signals.editor.sandboxChanged({ id });
   };