Forums visual styling adjustments

This branch includes visual styling changes for the forums. Included here are some screenshots and a description of the changes.
Image 1: 
* Votes no longer in gray box and are a bit further away from the Comments block.
* Height of the row for the discussion list is a bit taller, allowing us to have slightly larger comment box
* Comment icon is moved a bit further to the left
* Slightly larger following icon 
![image](https://f.cloud.github.com/assets/2023680/2326592/e03f72c8-a3e4-11e3-9937-8cd1426b20f1.png)

Image 2:
* Light texture background for the post area
* Synced up Add a Response button with Edit and Delete buttons 
* Downplayed metadata labels for number of responses at top and bottom of the list
* Comments are now full width within a response area
* Similar drop shadow as post--> responses area for response --> comments
![image](https://f.cloud.github.com/assets/2023680/2326597/e9de2ebe-a3e4-11e3-80eb-f395fe98d0b8.png)

Image 3:
* bottom loading area synced up to use Add Response Button style
* recessed visual area for "Showing X Discussions" label
![image](https://f.cloud.github.com/assets/2023680/2326602/f29e52f4-a3e4-11e3-999d-a29561127659.png)