Bottom left right

In response to [this issue](https://github.com/SamSaffron/MiniProfiler/issues/194) from the old project, and mirroring [this pull request](https://github.com/SamSaffron/MiniProfiler/pull/196). Goes along with [this pull request](https://github.com/MiniProfiler/ui/pull/1) from the UI project (which is included here as a submodule).

* I added new RenderPosition values: BottomLeft and BottomRight (kept the existing Left and Right the same - default is to Top, no reason to introduce legacy issues).
* Added two new actions to Sample.MVC to demo/test bottom left and right. Uses the same logic from the Index Action, just sets the render position differently in the Layout file

![10-3-2013 12-32-18 pm](https://f.cloud.github.com/assets/1366941/1260557/2cbfccbc-2c10-11e3-96e7-3fa52fd7ec37.png)