lots of cleanup and refactoring

cookbook/templates/include/storage_backend_warning.html

@@ -0,0 +1,12 @@
+{% load i18n %}
+
+<div class="alert alert-danger" role="alert">
+    <h4 class="alert-heading"><i class="far fa-exclamation-triangle"></i> {% trans 'Security Warning' %}</h4>
+    <p>{% blocktrans %}
+        The <b>Password and Token</b> field are stored as <b>plain text</b> inside the database.
+        This is necessary because they are needed to make API requests, but it also increases the risk of
+        someone stealing it. <br/>
+        To limit the possible damage use read only tokens or accounts if available or create separate accounts
+        with limited access (only to recipes).
+    {% endblocktrans %}</p>
+</div>