Add project restrictions for custom roles

app/Template/project_role_restriction/create.php

@@ -0,0 +1,19 @@
+<section id="main">
+    <div class="page-header">
+        <h2><?= t('New project restriction for the role "%s"', $role['role']) ?></h2>
+    </div>
+    <form class="popover-form" method="post" action="<?= $this->url->href('ProjectRoleRestrictionController', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
+        <?= $this->form->csrf() ?>
+        <?= $this->form->hidden('project_id', $values) ?>
+        <?= $this->form->hidden('role_id', $values) ?>
+
+        <?= $this->form->label(t('Restriction'), 'rule') ?>
+        <?= $this->form->select('rule', $restrictions, $values, $errors) ?>
+
+        <div class="form-actions">
+            <button type="submit" class="btn btn-blue"><?= t('Save') ?></button>
+            <?= t('or') ?>
+            <?= $this->url->link(t('cancel'), 'ProjectRoleController', 'show', array(), false, 'close-popover') ?>
+        </div>
+    </form>
+</section>