Remove description of non-existent ENGINE_STATUS_IS_ENGLISH
Add missing parentheses around the bitmask argument
Don't send update-property signal in property-{show,hide} signal handlers

Since the emitter of property-{show,hide} should have known the new status,
no need to send update-property.
Don't touch properties in enable/disable

Do that in focus_in/focus_out instead.
Don't send update-property until properties are registered
Merge pull request #45 from ueno/properties-fix

:+1: