video page fixes

Changes
------------
- Auto height for popular video container
- Only break tags into left column at the wide breakpoint on media page

Fixes
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fix for popular video container getting cut off:
![image](https://cloud.githubusercontent.com/assets/960919/4322570/ba5ff87e-3f49-11e4-80be-6dd126c92748.png)

and partial fix for tags colliding with long bylines:

![image](https://cloud.githubusercontent.com/assets/960919/4322583/cde6bc20-3f49-11e4-8abf-fb352de5cd41.png)

// @Jholder112233