app/assets/javascripts/your_platform/tools.js.coffee
$(document).on 'mouseenter', '.edit_button', ->
if not $(this).closest('edit_mode_group').hasClass('currently_in_edit_mode')
$(this).closest('.box').find('.shown_on_edit_button_hover').css('visibility', 'visible')
$(document).on 'mouseenter', '.box_tools', ->
if not $(this).closest('edit_mode_group').hasClass('currently_in_edit_mode')
$(this).closest('.box').find('.shown_on_box_header_hover').css('visibility', 'visible')
$(document).on 'mouseleave', '.box_tools', ->
$(this).find('.shown_on_edit_button_hover').css('visibility', 'hidden')
$(this).find('.shown_on_box_header_hover').css('visibility', 'hidden')