The jQuery UI Accordion library is not loaded if the views "Exposed form style" is set to "Input required"

Issue Summary

Problem/Motivation

The Views Accordion module loads the jQuery UI Accordion library in the views plugin style's render function. This function is not run before a page is rendered for views that have the "Exposed form style" set to "Input required".

Proposed resolution

The views_plugin_style class has a pre_render function that is run regardless of the "Exposed form style".

Remaining tasks

Reviews needed.