Updating "jetpack" submodule/ WP plugin from 2.9.1 to 3.0,

* @georgestephanis, Tue May 20 18:27:56 2014 +0000 "Jetpack: Tag 3.0 release."
* https://github.com/wp-plugins/jetpack/releases/tag/3.0
* Code: https://github.com/wp-plugins/jetpack/commit/acf238965a53daa3
* Tag: https://github.com/wp-plugins/jetpack/commit/91be0d7370000326
Update "wp-evidence-hub" submodule/WP Plugin from 3 March to 16 April

* 3 March: https://github.com/mhawksey/wp-evidence-hub/commit/f42fa65639b8fb04
* 16 Apr: https://github.com/mhawksey/wp-evidence-hub/commit/e666a787d3fbc379
* By @mhawksey "Fix CSS for wordpress 3.9 compatibility"
Bug #13, Add a utility WP shortcode `[simple_menu menu=Main sub=Help]`
Bug #14, Fix to JuxtaLearn Quiz score processing/ visualization

* Handle multiple questions per Stumbling Block tag correctly
* Plus, use WordPress filter - "wp_filter_nohtml_kses()"
Bug #13/ #14, Style/ CSS fixes for JuxtaLearn Quiz visualizations

* Plus, WordPress filter added to [quiz_list] shortcode
Bug #14, More sensible defaults for "divisor" etc. - JuxtaLearn Quiz

* Class constants for divisor and offset
Bug #3/ #14, Edits to "Simple Embed" WP Plugin style/CSS

* JuxtaLearn Quiz visualization embeds
Bug #3/ #14, More edits to "Simple Embed" plugin style/CSS
Bug #1, Add an "Edit Quiz" link via [slickquiz_dummy] pseudo-shortcode

* Pages like, "/juxtalearn-quiz/{2}"
Update "wp-juxtalearn-hub" submodule/ WP plugin to latest
Minor edits to ".gitignore"
Merge branch 'juxtalearn' into jxl/CR8/api
Bug #8, Quiz-questions and SB tags now save to JuxtaLearn ClipIt API
Bug #8, Update "juxtalearn-cookie-authentication" submodule to latest

* PHP library, tagged "1.0"
* https://github.com/juxtalearn/juxtalearn-cookie-authentication/commit/fa6bc431