Add ui to create new custom project roles and column restrictions

app/Template/project_role/create.php

@@ -0,0 +1,18 @@
+<section id="main">
+    <div class="page-header">
+        <h2><?= t('New custom project role') ?></h2>
+    </div>
+    <form class="popover-form" method="post" action="<?= $this->url->href('ProjectRoleController', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
+        <?= $this->form->csrf() ?>
+        <?= $this->form->hidden('project_id', $values) ?>
+
+        <?= $this->form->label(t('Role'), 'role') ?>
+        <?= $this->form->text('role', $values, $errors, array('autofocus', 'required', 'maxlength="50"')) ?>
+
+        <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>