How can I temporarily disable a row or a widget from showing on the page without deleting it (Live Editor). I'm assuming it must be some kind of CSS code to display:none or something similar.
Do you have a comprehensive list of CSS overrides that can be used within the template? hide on mobile, hide on tablet, hide on desktop, change font style etc....
HIDING ROWS: You can temporarily hide a row by changing the Mobile, Tablet and Desktop display options to "hide" in row "Responsive options" (see screenshot). This way you can display a row on desktop only and hide it on mobile devices.
Another option to hide the row is to add display:none; to the CSS Styles field in row "Attributes". This works with widgets too.
CSS CLASSES: I will prepare a list of Dentalia CSS classes tomorrow in the office and send it to you.
You were asking for HTML classes, which you can use with the theme.
You can find them here: http://orionthemes.com/knowledgebase/html-classes-cheatsheet/
I hope this helps,Andrej