Rename File controller to TaskFile

app/Template/task_file/screenshot.php

@@ -0,0 +1,19 @@
+<div class="page-header">
+    <h2><?= t('Add a screenshot') ?></h2>
+</div>
+
+<div id="screenshot-zone">
+    <p id="screenshot-inner"><?= t('Take a screenshot and press CTRL+V or ⌘+V to paste here.') ?></p>
+</div>
+
+<form class="popover-form" action="<?= $this->url->href('TaskFile', 'screenshot', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>" method="post">
+    <input type="hidden" name="screenshot"/>
+    <?= $this->form->csrf() ?>
+    <div class="form-actions">
+        <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
+        <?= t('or') ?>
+        <?= $this->url->link(t('cancel'), 'task', 'show', array('task_id' => $task['id'], 'project_id' => $task['project_id']), false, 'close-popover') ?>
+    </div>
+</form>
+
+<p class="alert alert-info"><?= t('This feature does not work with all browsers.') ?></p>