Only offer agreement download to non-crown for now

We don’t have the crown agreement in a nice downloadable format at the
moment.

app/domains.yml

@@ -159,7 +159,11 @@ rpa.gov.uk:
   agreement_signed: true
 mcga.gov.uk:
   owner: Maritime and Coastguard Agency
-  agreement_signed: true  
+  agreement_signed: true
+metoffice.gov.uk:
+  owner: Met Office
+  agreement_signed: false
+  crown: true
 
 # Local Government
 aberdeencityandshire-sdpa.gov.uk:

app/main/views/agreement.py

@@ -2,12 +2,11 @@ from flask import render_template, send_file
 from flask_login import login_required
 
 from app.main import main
-from app.main.views.sub_navigation_dictionaries import features_nav
 from app.main.s3_client import get_mou
+from app.main.views.sub_navigation_dictionaries import features_nav
 from app.utils import AgreementInfo
 
 
-
 @main.route('/agreement')
 @login_required
 def agreement():

app/utils.py

@@ -484,7 +484,7 @@ class AgreementInfo:
                 'agreement.'.format(self.owner)
             )
 
-        if self.crown_status is not None:
+        if self.crown_status is False:
             return ((
                 '{} <a href="{}">Download a copy</a>.'
             ).format(self._acceptance_required, download_link))
@@ -504,7 +504,7 @@ class AgreementInfo:
 
     @property
     def crown_status_or_404(self):
-        if self.crown_status is None:
+        if self.crown_status in {None, True}:
             abort(404)
         return self.crown_status