Remove whitespace from LeftAndMain_Menu
Trigger delete confirmation popup when deleting a GridFieldDetailForm record
Merge pull request #1158 from halkyon/deleteaction

Trigger delete confirmation popup when deleting a GridFieldDetailForm re...
NEW Don't load CMS preview iframe if not visible (fixes #8247)
Fixed DatetimeField formatting (single row, smaller field)

Also removed the arbitrary right-floating of fields within a fieldgroup