Responsiveness fix for IE9+

Current implementation has broken ui on IE9+. The most visible one is an issue with responsiveness.

The reason of this is `<meta http-equiv="X-UA-Compatible" content="IE=8" />` added by Roo but not supported by Bootstrap.

Testing.
Reproducing the problem: open demo site (for example: http://roostrap.appspot.com/people;jsessionid=MXFm97UbzOYobfUx5ytiEg?page=1&size=10) with IE9+. You should see some issues with responsiveness (site is rendered on desktop as it wold render on mobile device) and styles.
Testing fix: run roostrap on devserver. Responsiveness and style problems should be fixed.

Tested on IE9, IE10, FF25, Chrome 31

PS: Used roostrap on one of my recent projects. Come across multiple issues and things that could be improved. Goind to port some of the solutions/improvements in the nearest future, so stay tuned for more updates from me ;)