invoice-ninja: Fix document upload feature

Invoice Ninja allows attaching documents to invoices, payments,
expenses, etc.  Tabitha wants to use this feature to attach receipts for
her expenses, but the photos her phone takes of them are too large for
the default nginx client body limit.  We can raise this limit on the
ingress, but we also need to raise it on the "inner" nginx.

invoice-ninja/ingress.yaml

@@ -5,6 +5,8 @@ metadata:
   labels:
     app.kubernetes.io/name: invoice-ninja
     app.kubernetes.io/component: invoice-ninja
+  annotations:
+    nginx.ingress.kubernetes.io/proxy-body-size: 40m
 spec:
   rules:
   - host: invoiceninja.pyrocufflink.blue

invoice-ninja/nginx.conf

@@ -37,6 +37,8 @@ http {
 
         charset utf-8;
 
+        client_max_body_size 0;
+
         location / {
             try_files $uri $uri/ /index.php?$query_string;
         }