Revert "Issue #2750 fix proposal"

This reverts commit 840258fa3318dbfb6a95575319c548ea920c0a40.

Conflicts:
	kivy/uix/stacklayout.py
Revert "StackLayout spacing / padding fix"

This reverts commit ba2dcbff1ae81105d1c50ed59347be6ad5d31c5d.

Conflicts:
	kivy/uix/stacklayout.py

Split to new branch fix_2750
Revert "StackLayout spacing / padding fix"

This reverts commit ba2dcbff1ae81105d1c50ed59347be6ad5d31c5d.

Conflicts:
	kivy/uix/stacklayout.py

Split to new branch fix_2750
Revert "Documentation, vertex instruction line typo"

This reverts commit f717adb5d7c72587c216f67fa368682790250f17.