Allow for multiple thumbnails for articles

Currently there are two different thumbnail sizes for articles. One is for the actual thumbnail when browsing the article page. The other for the "banner" image. You are only allowed to upload one image that acts as both the thumbnail and banner image. The issue is that the dimension of the banner and the thumbnail are two different sizes. When making a thumbnail the image for the banner is too low of a resolution and vice versa. Allow for us to either change how the size is represented or allow to two different image uploads. Thx! :).