Fixed a few design issues and also completed issues with #372

I fixed a few bugs that were mostly css issues, hoping this helps polish up the app a bit more before we move over to more "structural" changes.
Before (notice how it keeps going to the right of the chat window, adding a side scrollbar:
![screen shot 2014-11-19 at 2 45 54 pm](https://cloud.githubusercontent.com/assets/463175/5113404/6776943a-6ffd-11e4-82cc-281b79ae2c35.png)

After (now everything shows up):
![screen shot 2014-11-19 at 2 46 21 pm](https://cloud.githubusercontent.com/assets/463175/5113414/75cc68c0-6ffd-11e4-99bb-e7d14b681d8f.png)