Added "tiny" icon view

Also refactored views so there's only one item_* view required.

I'm not sure if many other people would like this, but I find that with the keyboard taking up half of my screen, the "small" icon size is not enough. While I am obviously able to just show the text instead of the icons, I really like the visual help that the icons give. 

If you see fit to merge this and pull request 21, then you'll probably want to replace "tiny" with "Tiny" in strings.xml.