Fixes T338

Summary:
* removed unnecessary `list-wrapper` class/div in `TagListItem.html`

Fixes T338

Test Plan: load 'Manage Tags'. Box shadow should be gone.

Reviewers: rjmackay

Reviewed By: rjmackay

Subscribers: dkobia, shadowhand

Maniphest Tasks: T338

Differential Revision: https://phabricator.ushahidi.com/D169