Bug #33/#22, Update SlickQuiz WP plugin/submodule [JuxtaLearn]

* From: version 1.3.2, May 18 2014,
* https://github.com/jewlofthelotus/SlickQuiz-WordPress/commit/9e43ee3c8ca12173
* To version 1.3.6.1, Oct 25 2014, @jewlofthelotus, "animation and percentage+ranking fix"
* (https://github.com/jewlofthelotus/SlickQuiz-WordPress/releases/tag/1.3.6.1)
* https://github.com/jewlofthelotus/SlickQuiz-WordPress/commit/1ead9cc6b421f96b
* Upgrades slickQuiz.js to 1.5.20