Improve settings page and move some config parameters to the database

app/Templates/config_api.php

@@ -0,0 +1,18 @@
+<div class="page-header">
+    <h2><?= t('API') ?></h2>
+</div>
+<section class="listing">
+    <ul>
+        <li>
+            <?= t('API token:') ?>
+            <strong><?= Helper\escape($values['api_token']) ?></strong>
+        </li>
+        <li>
+            <?= t('API endpoint:') ?>
+            <input type="text" readonly="readonly" value="<?= Helper\get_current_base_url().'jsonrpc.php' ?>">
+        </li>
+        <li>
+            <?= Helper\a(t('Reset token'), 'config', 'token', array('type' => 'api'), true) ?>
+        </li>
+    </ul>
+</section>