- Added ToolBar class.
- Implemented Button Image option.
- Added string_format function.
- Started pulling config options from the editor. I think it clutters up the code more than anything else.
- Removed map file path entry textfield from EditorState.
- Added a map file path textfield to the StartState -- it makes more sense to have it there.
- StartState will now flash a warning message when there's an issue with any of the values in the text fields.
- Modified Map to take better advantage of the Viewport (allows for rendering a toolbar at the top without hiding any tiles underneath it.
- Menu will now only sort items when its sorted flag is set.