tabs: Fixed the painting of tabs when positioned at tpBottom.
tabs: Fixed the painting of tabs when positioned at tpBottom.

* The text was not at the correct position (to high)
* The tab height was not the same as when tpTop is used

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI