Anything not provided or defined by a skin will be used from the defined base skin, if specified.
For example, if a skin provides a base_theme of "cartoon", any icons/buttons/etc. not provided by the skin will be pulled from "cartoon".
* Implement box model spacing for skin elements
* Account for padding when spacing out on-screen keyboard
* Fix padding for Tutorial button on Help screen
* Reduce spacing between tabs
(Also removed a couple duplicated files.)
* Change verticalTab margin as per Benau's request
Uses `vborder_out_portion`, which is how it was done before.
* Remove duplicate files
* Adjust spacings after PNGs were adjusted in a previous commit
* Improve spacing of verticalTabs
* Slightly increase the tabbar width in the Options screens
* Slightly increase the tabbar width in the help screens
