feat: display group ID

src/views/index.html

@@ -293,6 +293,7 @@
             <table class="ui celled table" id="user_groups_table">
                 <thead>
                 <tr>
+                    <th>Group ID</th>
                     <th>Group Name</th>
                     <th>Group Participants</th>
                     <th>Group Created At</th>
@@ -300,6 +301,7 @@
                 </thead>
                 <tbody v-if="data_groups != null">
                 <tr v-for="g in data_groups">
+                    <td data-label="GID">[[ g.JID.User ]]</td>
                     <td data-label="Name">[[ g.Name ]]</td>
                     <td data-label="Age">[[ g.Participants.length ]]</td>
                     <td data-label="Job">[[ g.GroupCreated ]]</td>