Change organisations to email branding

app/notify_client/email_branding_client.py

@@ -0,0 +1,37 @@
+from app.notify_client import NotifyAdminAPIClient
+
+
+class EmailBrandingClient(NotifyAdminAPIClient):
+
+    def __init__(self):
+        super().__init__("a" * 73, "b")
+
+    def init_app(self, app):
+        self.base_url = app.config['API_HOST_NAME']
+        self.service_id = app.config['ADMIN_CLIENT_USER_NAME']
+        self.api_key = app.config['ADMIN_CLIENT_SECRET']
+
+    def get_email_branding(self, branding_id):
+        return self.get(url='/email-branding/{}'.format(branding_id))
+
+    def get_all_email_branding(self):
+        return self.get(url='/email-branding')['email_branding']
+
+    def get_letter_email_branding(self):
+        return self.get(url='/dvla_organisations')
+
+    def create_email_branding(self, logo, name, colour):
+        data = {
+            "logo": logo,
+            "name": name,
+            "colour": colour
+        }
+        return self.post(url="/email-branding", data=data)
+
+    def update_email_branding(self, branding_id, logo, name, colour):
+        data = {
+            "logo": logo,
+            "name": name,
+            "colour": colour
+        }
+        return self.post(url="/email-branding/{}".format(branding_id), data=data)