Change `Button` to owner drawn class

Convert the `Button` implementation to use an owner drawn button. This should allow for changing the button to include an image and title simultaneously. Additionally, it would allow for embedding a `Label` and `ImageView` members which can then be made available to the user to control the button more thoroughly.

Start by locating the existing Button implementation and reading how its content and configuration are currently handled. Done means the button supports an image and title together, with embedded Label and ImageView members available for user control; no specific test or file is named in the issue.

Written by the indexing model from the issue text.