Added assignee to frontend

app/assets/javascripts/boards/models/issue.js.es6

@@ -2,6 +2,11 @@ class Issue {
   constructor (obj) {
     this.id = obj.iid;
     this.title = obj.title;
+
+    if (obj.assignee) {
+      this.assignee = new User(obj.assignee);
+    }
+    
     this.labels = [];
 
     obj.labels.forEach((label) => {

app/assets/javascripts/boards/models/user.js.es6

+class User {
+  constructor (user) {
+    this.id = user.id;
+    this.name = user.name;
+    this.username = user.username;
+    this.avatar = user.avatar_url;
+  }
+}

app/assets/stylesheets/pages/boards.scss

@@ -237,3 +237,8 @@
   margin-right: 8px;
   font-weight: 500;
 }
+
+.card-avatar {
+  margin-top: -2px;
+  border-radius: 50%;
+}

app/views/projects/boards/components/_card.html.haml

@@ -8,3 +8,5 @@
         {{ issue.id }}
     %span.label.color-label{ "v-for" => "label in issue.labels", ":style" => "{ backgroundColor: label.color, color: label.textColor }" }
       {{ label.title }}
+    %a{ ":href" => "'/u/' + issue.assignee.username", ":title" => "issue.assignee.name", "v-if" => "issue.assignee" }
+      %img.card-avatar{ ":src" => "issue.assignee.avatar", width: 20, height: 20 }