Better 403 error message

src/templates/errors/403_embed.jade

@@ -1,16 +1,19 @@
 #error_container.403
 	#error_box
 		.error-top-container
-			.error-title Sorry to bother you, but...
+			.error-top-header-overlay
+			.error-top-header(
+				style="background-image: url({{ url_for('static', filename='assets/img/backgrounds/background_agent327_02.jpg')}})")
 
-			.error-lead.
-				This content is only available to Cloud subscribers.<br/>
-				Get full access to the Blender Cloud for only $9.90 per month.
+			.error-title
+				span.icon
+					i.pi-lock-open
+				span.text Get this and more with your<br/> Blender Cloud subscription.
 
 			.buttons
 				a.sign-up.btn.btn-outline(href="https://store.blender.org/product/membership/")
 					i.pi-check
-					| Subscribe Now
+					| Subscribe
 
 				| {% if not current_user.is_authenticated %}
 				a.sign-in.btn.btn-empty(href="{{ url_for('users.login') }}")
@@ -20,6 +23,53 @@
 
 		hr
 
+		section.error-watchamissing
+			h2 Support Blender and get awesome stuff.
+
+			.row
+				.col-md-4
+					a(href="{{ url_for('main.training') }}")
+						h3 Training &amp; Tutorials
+						p.
+							Character modeling, 3D printing, VFX, rigging and more. We offer
+							12 complete training series with +100 hours of training.
+
+				.col-md-4
+					a(href="{{ url_for('main.open_projects') }}")
+						h3 Open Projects
+						p.
+							The iconic Blender Institute Open Movies,
+							featuring all the production files, assets, artwork, and never-seen-before content.
+
+				.col-md-4
+					a(href="{{ url_for('main.services') }}")
+						h3 Services & Tools
+						p.
+							Create your personal projects, collaborate with other members, store
+							and sync your Blender settings across multiple workstations.
+
+			.row
+				.col-md-4
+					a(href="{{ url_for('main.redir_textures') }}")
+						h3 Textures
+						p.
+							More than 1500 texture maps to browse online or within Blender via our awesome add-on.
+							Create your own Texture libraries!
+
+				.col-md-4
+					a(href="{{ url_for('main.redir_hdri') }}")
+						h3 HDRI
+						p.
+							Up to 8K and 18 EVs (extremely high) HDR images to light your renders.
+
+				.col-md-4
+					a(href="{{ url_for('main.redir_characters') }}")
+						h3 Characters
+						p.
+							Production quality, fully rigged and shaded characters ready to animate.
+
+		hr
+
 		.error-lead.extra.
-			If you have just subscribed, please <a href="{{ url_for('users.logout') }}">log out</a> and in again.<br/>
-			For any other issue get in touch with <a href="mailto:cloudsupport@blender.org">cloudsupport@blender.org</a>
+			If you have just subscribed, please <a href="{{ url_for('users.logout') }}">log out</a> and in again.
+			For any other issue get in touch via <a href="mailto:cloudsupport@blender.org">cloudsupport@blender.org</a>