Refactored change_a_global_property.story

Removed redundant step definitions for a story and updated story itself
to use 'base' steps
Revert "Refactored change_a_global_property.story"

This reverts commit 0b844ac6fdbb8e80a99d36a3b44243ea26e72241.
Refactored change_a_global_property.story

Removed redundant steps so that 'base' steps are used and updated the
story to use the 'base' steps