Added 3 Tests, modified AdminSteps

Added and fixed ChangeALocale, ChangeATheme, and CreateAGlobalProperty
stories back to stories folder. Added a Given step to the AdminSteps
class to handle 'Given I am on Admin page' which needs to be changed to
'Given I am on Administration page'
Removing fixed stories from todostories folder

Forgot stories needed to be removed from todostories folder