Frontend: Add support for deleting current account

templates/panel.html

@@ -12,6 +12,11 @@
 			<input name="newPassword" type="password" placeholder="New password"><br />
 			<input type="submit" value="Change" />
 		</form>
+		<h3>Delete this account</h3>
+		<form action="delete_account_action" method="POST">
+			<input name="password" type="password" placeholder="Password" /><br />
+			<input type="submit" value="Delete (this operation cannot be reverted!)" />
+		</form>
 		{{manageChannelAccess}}
 		{{addUser}}
 		{{updateUser}}