Fix for dropdowns in tables

Woot! After a lot of thought last night and this morning I came up with this solution to having dropdowns in a table with the `.table-responsive` class.

## The problem
The CSS for `.table-responsive`:
```css
.table-responsive{
  width: 100%;
  margin-bottom: 20px;
  overflow-y: hidden;
  overflow-x: scroll;
  -ms-overflow-style: -ms-autohiding-scrollbar;
  border-radius: 3px;
  border: 1px solid #dddddd;
  -webkit-overflow-scrolling: touch;
}
```
The problem is we have overflow: hidden/scroll. Which is how this table solution works, but it cuts off any dropdown menus that are inside the table. Best way I can show it happening is in the picture below: 
![table-overflow-issues](https://cloud.githubusercontent.com/assets/2072894/2770016/3e31a528-ca59-11e3-86ae-398593dd59b8.jpg)

## The fix
Add height to the `.table-responsive` div so it doesn't cut off the dropdown! If needed I can create an example. It'll just take like a half hour to do.