Updated attachment links to have dropdown for open type

- Allows easier accessibility of inline attachments.
- Introduces a new split-icon-list-item thingy to support such cases
  where only part of the button is actually linked.

resources/lang/en/common.php

@@ -47,6 +47,8 @@ return [
     'previous' => 'Previous',
     'filter_active' => 'Active Filter:',
     'filter_clear' => 'Clear Filter',
+    'download' => 'Download',
+    'open_in_tab' => 'Open in Tab',
 
     // Sort Options
     'sort_options' => 'Sort Options',