Can't select document on email compose using search

[sanchezfauste]

Issue

If you compose a new email and you want to attach a document using search or going to next page, the document is not attached.

Related issue: #3733

Expected Behavior

It must be possible to attach a document using a search.

Actual Behavior

When you click on next page o search button the document icon disappears.

Possible Fix

I will submit a PR later.

Steps to Reproduce

1. Go to Emails, click Compose.
2. Click the attach document button.
3. Apply a search on the oppened popup.
4. Select one document.
5. See that the document is not attached.

Context

We are trying to attach a document when sending an email, applying a filter.

Your Environment

• SuiteCRM Version used: 7.9.17
• Browser name and version (e.g. Chrome Version 51.0.2704.63 (64-bit)): Versión 66.0.3359.181 (Build oficial) (64 bits)
• Environment name and version (e.g. MySQL, PHP 7): mysql-server-5.5 and PHP 5.5.9
• Operating System and version (e.g Ubuntu 16.04): Ubuntu 14.04