Added sketch pages.

community/www/sketches/sketch.py

@@ -0,0 +1,27 @@
+import frappe
+
+def get_context(context):
+    context.no_cache = 1
+    course_name = get_queryparam("sketch", '/sketches')
+    context.sketch = get_sketch(course_name)
+    context.livecode_url = get_livecode_url()
+
+def get_livecode_url():
+    doc = frappe.get_doc("LMS Settings")
+    return doc.livecode_url
+
+def get_queryparam(name, redirect_when_not_found):
+    try:
+        return frappe.form_dict[name]
+    except KeyError:
+        frappe.local.flags.redirect_location = redirect_when_not_found
+        raise frappe.Redirect
+
+def get_sketch(name):
+    try:
+        sketch = frappe.get_doc('LMS Sketch', name)
+    except frappe.exceptions.DoesNotExistError:
+        raise frappe.NotFound
+
+    sketch.owner = sketch.owner.split("@")[0]
+    return sketch