Fix time position on blog listing pages

Duplicate of #218 but updated for master. It also fixes an issue wherein blog posts might be a little too short.

Fixes #331 

# BEFORE
![screen shot 2014-12-13 at 2 24 30 pm](https://cloud.githubusercontent.com/assets/3853/5425603/cd3c97c2-82d3-11e4-9fbf-e7ac8c908462.png)

# With #218 applied
![screen shot 2014-12-13 at 2 22 10 pm](https://cloud.githubusercontent.com/assets/3853/5425605/d1cb9662-82d3-11e4-8975-4019c5428e85.png)

# With this applied
![screen shot 2014-12-13 at 2 22 05 pm](https://cloud.githubusercontent.com/assets/3853/5425608/d72aa512-82d3-11e4-8675-e6ca1b93099a.png)