Add template for pending moderation

Author: Vlad0n20

website/routes.py

@@ -261,7 +261,7 @@ def ember_app(path=None):
                             from framework.auth import Auth
                             auth = Auth.from_kwargs(request.args.to_dict(), {})
                             if not preprint.can_view(auth):
-                                if getattr(preprint, 'is_pending_moderation', True):
+                                if preprint.is_pending_moderation:
                                     renderer = OsfWebRenderer('pending_moderation.mako', trust=False)
                                     return renderer({
                                         'resource_type': (preprint.provider.preprint_word or 'preprint') if preprint.provider else 'preprint',

website/templates/pending_moderation.mako

@@ -0,0 +1,37 @@
+<%inherit file="base.mako"/>
+<%def name="title()">Pending Moderation</%def>
+<%def name="description()">This ${resource_type} is pending moderation</%def>
+
+<%def name="content()">
+<style>
+    /* Ensure content area has enough height so the footer sticks to the bottom */
+    .pending-wrapper {
+        min-height: calc(100vh - 180px); /* header+footer approximate height */
+        display: -webkit-box;
+        display: -ms-flexbox;
+        display: flex;
+        -webkit-box-align: center;
+            -ms-flex-align: center;
+                align-items: center;
+    }
+</style>
+
+<div class="pending-wrapper">
+    <div class="container">
+        <div class='row'>
+            <div class='col-md-12'>
+                <div class="text-center">
+                    <h2 id='pending-moderation-message'>Pending Moderation</h2>
+                    <div class="alert alert-info">
+                        <i class="fa fa-hourglass-half"></i>
+                        <strong>This ${resource_type} is pending moderation at ${provider_name}</strong>
+                        <p>This ${resource_type} has been submitted for review and is not yet publicly available.
+                        Please check back later as moderation decisions may take some time.</p>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+</%def>
+