Replace 'Enable %s' by 'Enable' in zone settings

[ozancaglayan]

There are already titles for each section in the zone settings so it is not necessary to duplicate that title in the "Enable %s" switch. Moreover this garbles the UI and it is nearly impossible to translate this to Turkish as you have to put different suffixes for each section name.

So it would be good to not translate them and replace them with a plain 'Enable' as an enhancement in library/classes/postviews-section.php.