[Motacore] Mobile Sidebar 1.0.2

@dutchbb , suggested an option to swipe. My test setup, I changed the 30px to 70px and I think it worked better. But I want others to tell me what they think.

And just in case you didn't know, this does install and work on 2.3.9.

This update applies the changes by @ge66 which fixes it when using XenForo 2.3, though I'm still still on 2.2 so I haven't tested it myself (on 2.3).