Furbish

This is just a quick add-on to make the default aura frames look slightly more appealing (at least to myself).

What it currently does is:
* Remove the border on the icons.
* Move the timer into the icons to save space.
* Color the entire debuff icon with its type.
* Change the color of the text to white.

The layout changes are only done once per icon. A common mistake done by many of the other add-ons that modify the default aura icons, is that they re-apply their modification on all available icons when an update happens. Furbish attempts to avoid this by keeping track of what it currently has updated, and it will also disable itself once all icons are modified.