Page Layout - how to hide the west pane permanently?

My organization uses Folder Sync with enterprise vault.cloud personal archive and I find tags way more useful than digging through folders. For me, folder sync is a waste of my attention and screen space.  Is there a way to hide it permanently?

I noticed the site uses JQuery views:http://layout.jquery-dev.net/demos/custom_togglers.html

I can minimize the "west" pane by clicking on the toggler, but next time I log in, the west pane is open again.

If I go into settings and choose the layout I want (five) it still looks like six.