Fixes: Collection creation notification email

Added: Unsubscribe option to notification email footers
Added: Two new notification types (emails not written yet)
Fixed: Validation added to notification setting events

server/emails/components/Footer.js

@@ -4,14 +4,24 @@ import { Table, TBody, TR, TD } from 'oy-vey';
 import { twitterUrl, spectrumUrl } from '../../../shared/utils/routeHelpers';
 import theme from '../../../shared/styles/theme';
 
-export default () => {
-  const style = {
+type Props = {
+  unsubscribeUrl?: string,
+};
+
+export default ({ unsubscribeUrl }: Props) => {
+  const footerStyle = {
     padding: '20px 0',
     borderTop: `1px solid ${theme.smokeDark}`,
     color: theme.slate,
     fontSize: '14px',
   };
 
+  const unsubStyle = {
+    padding: '0',
+    color: theme.slate,
+    fontSize: '14px',
+  };
+
   const linkStyle = {
     color: theme.slate,
     fontWeight: 500,
@@ -29,7 +39,7 @@ export default () => {
     <Table width="100%">
       <TBody>
         <TR>
-          <TD style={style}>
+          <TD style={footerStyle}>
             <a href={process.env.URL} style={linkStyle}>
               Outline
             </a>
@@ -41,6 +51,15 @@ export default () => {
             </a>
           </TD>
         </TR>
+        {unsubscribeUrl && (
+          <TR>
+            <TD style={unsubStyle}>
+              <a href={unsubscribeUrl} style={linkStyle}>
+                Unsubscribe from these emails
+              </a>
+            </TD>
+          </TR>
+        )}
       </TBody>
     </Table>
   );