No php end tag
Add `abs()` test to integer variable testing set
<span> in stead of <b>
Upgrade jQuery UI to 1.10.4 and change theme to Redmond
JQuery UI CSS update
Update submodule
Adjusted page loading logic and layout

- Prep for move to own domain
- Accommodate/Add 'More cheat sheets' page
- Better page titles
Adjusted styling & finishing touches for move to own domain