WIDGPT-53: Resized icons to same height; added text background

Resize icons to be the same height, image icons responsive

After picture
![app_tiles](https://cloud.githubusercontent.com/assets/3999821/4328733/97803846-3f8a-11e4-85da-7fb27b727cae.png)

I need to incorporate styles to the overall div, which is typically done to a class, not an ID. This wrapper sets the height of the container, the width (for the text background) and the positioning necessary to grow the inner-text bottom-up.

If necessary, I can pull the class off the main div and create another div for the class, but I find that to be messy div nesting.