Beaver Builder's layout compatibility

[Vishakha-Patel]

SVG class is conflicting with the Beaver Builder and hence when the editor is open in a page/post, it shows like this: https://themeisle.com/index.php?gf-download=2018%2F12%2FScreen-Shot-2018-12-13-at-11.35.08.png&form-id=1&field-id=19&hash=cef22a3755cfce90d0d31bf50e460d8e5ad80de2c9cccdc9d858e8915036c1d1

Instead of: http://prntscr.com/lwi8od

Ticket: https://secure.helpscout.net/conversation/731032070/175835/

cc: @cristian-ungureanu