Log screenshot captures. Show formatted tag as tooltip.

![Screen Shot 2013-02-21 at 3 09 07 PM](https://f.cloud.github.com/assets/66577/182939/3c4d29be-7c7e-11e2-9037-61b2ca7c915b.png)

![Screen Shot 2013-02-21 at 3 25 48 PM](https://f.cloud.github.com/assets/66577/182940/3f386d78-7c7e-11e2-97f6-e4bcfb7a2af2.png)