Revert "fix: disallow robots from accessing the app"

This reverts commit a6aa66eedd.

public/robots.txt

@@ -1,2 +1,5 @@
-User-agent: *
+# See http://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
-Disallow: /
+#
+# To ban all spiders from the entire site uncomment the next two lines:
+# User-agent: *
+# Disallow: /