Add resend email button to admin user form

Fixes https://github.com/openfoodfoundation/openfoodnetwork/issues/1589

app/assets/javascripts/admin/users/directives/resend_user_email_confirmation.js.coffee

@@ -0,0 +1,19 @@
+angular.module("admin.users").directive "resendUserEmailConfirmation", ($http) ->
+  scope:
+    email: "@resendUserEmailConfirmation"
+  link: (scope, element, attrs) ->
+    sent = false
+    text = element.text()
+    sending = " " + t "js.admin.resend_user_email_confirmation.sending"
+    done = " " + t "js.admin.resend_user_email_confirmation.done"
+    failed = " " + t "js.admin.resend_user_email_confirmation.failed"
+
+    element.bind "click", ->
+      return if sent
+      element.text(text + sending)
+      $http.post("/user/spree_user/confirmation", {spree_user: {email: scope.email}}).success (data) ->
+        sent = true
+        element.addClass "action--disabled"
+        element.text text + done
+      .error (data) ->
+        element.text text + failed

app/assets/stylesheets/admin/openfoodnetwork.css.scss

@@ -71,6 +71,14 @@ a {
  cursor:pointer;
 }
 
+a.action--disabled {
+  cursor: default;
+
+  &:hover {
+    color: #5498da;
+  }
+}
+
 form.order_cycle {
   h2 {
     margin-top: 2em;

app/views/spree/admin/users/_email_confirmation.html.haml

@@ -1,2 +1,4 @@
-%p.alert-box
+%p.alert-box{"ng-app" => "admin.users"}
   = t(".confirmation_pending", address: @user.email)
+  %a{"resend-user-email-confirmation" => @user.email}
+    = t(".resend")

config/locales/en.yml

@@ -2435,6 +2435,10 @@ See the %{link} to find out more about %{sitename}'s features and to start using
           resolve: Resolve
       new_tag_rule_dialog:
         select_rule_type: "Select a rule type:"
+      resend_user_email_confirmation:
+        sending: "..."
+        done: "done ✓"
+        failed: "failed ✗"
     out_of_stock:
       reduced_stock_available: Reduced stock available
       out_of_stock_text: >
@@ -2588,6 +2592,7 @@ See the %{link} to find out more about %{sitename}'s features and to start using
       users:
         email_confirmation:
           confirmation_pending: "Email confirmation is pending. We've sent a confirmation email to %{address}."
+          resend: "Resend"
       variants:
         autocomplete:
           producer_name: Producer