Moved the templates into the app directory.

Added Manager to the app.py

app/main/views/index.py

@@ -1,6 +1,23 @@
+from flask import render_template
+
 from app.main import main
 
 
 @main.route('/index')
 def index():
     return 'Hello from notifications-admin'
+
+
+@main.route("/")
+def idx():
+    return render_template('index.html')
+
+
+@main.route("/govuk")
+def govuk():
+    return render_template('govuk_template.html')
+
+
+@main.route("/helloworld")
+def helloworld():
+    return render_template('hello-world.html')