Flipbook iframe do not have a title

Problem/Motivation

Iframe created by flip book do not have a title. This is required for wcag 2.0 https://www.w3.org/TR/WCAG20-TECHS/H64.html

Steps to reproduce

Create a flipbook entity.
Inspect display of the entity, the iframe will miss the title

Proposed resolution

I pached the module and js to pass the object name to javascript when it create the iframe.