Remove low speed connection image display conditions

- [new] Remove low speed connection image display condition
- [fix] Display top story inlined image when JS is off, browser does not cut the mustard or connection is Low

If a low speed connection was detected, we would not show images.

Although very clever, this condition brought more CSS complexity and made it harder to develop locally (since a low speed connection was often detected).

Considering the already existing complexity of the new facia containers, we can't satisfy both these cases properly without adding a large amount of extra code and testing overhead.

This PR upgrades all images whether you have a high speed connection or not.

If you're on a 3G connection (or worse), the mobile network operators will compress images to make sure  you get them fast anyway.


# JS Off or no CTM
## Before

![screen shot 2014-02-28 at 13 09 54](https://f.cloud.github.com/assets/85783/2294017/c2cfa7c6-a079-11e3-95eb-f032ae7e0c69.PNG)
![screen shot 2014-02-28 at 13 10 09](https://f.cloud.github.com/assets/85783/2294018/c51319d2-a079-11e3-8de4-89c8cadc2e56.PNG)


## After

![screen shot 2014-02-28 at 13 09 16](https://f.cloud.github.com/assets/85783/2294021/d484820c-a079-11e3-9296-bdf2f5a20732.PNG)

![screen shot 2014-02-28 at 13 09 44](https://f.cloud.github.com/assets/85783/2294023/d71aba9a-a079-11e3-8b9d-bafb197ee87f.PNG)


![ ](http://media.giphy.com/media/HZDyq4xY0rIqs/giphy.gif)