Ie 6 layout fix

Before:
(1) ![screen shot 2014-04-01 at 10 32 35](https://cloud.githubusercontent.com/assets/68009/2577521/c66c87f8-b980-11e3-9616-865a843fb789.png)
(2) ![screen shot 2014-04-01 at 10 32 41](https://cloud.githubusercontent.com/assets/68009/2577525/cc704bda-b980-11e3-9b1f-9a8335df37f4.png)
(3)
![screen shot 2014-04-01 at 10 33 06](https://cloud.githubusercontent.com/assets/68009/2577531/e3a91836-b980-11e3-88f4-7922bffceaca.png)

After:
(1)
![screen shot 2014-04-01 at 10 32 50](https://cloud.githubusercontent.com/assets/68009/2577526/dc460b08-b980-11e3-8154-27c8a6213734.png)

This PR fixes layout issues shown in before shot 1 and 2 by removing the 100% width on the legend for radio buttons that was there mistakenly.
This PR also adds back in some JavaScript that got removed (I'm not sure how, it looks like it was never committed but both @edds and I remember me writing it and I remember committing it so...). That JavaScript sets the checkbox-facets to always be open in for IE 6 and 7 and turns off JavaScript enhancements for them.