Make sure unhidden primary nav items don’t use inline-block
Make sure unhidden primary nav items don’t use inline-block

This fixes an odd edge case identified in XFP where items unhidden through `show()` were being assigned `inline-block` rather than `list-type`.

To resolve this we now explicitly set that as the inline style rather than use `show()`.

Fixes #719

jadu/pulsar,jadu/pulsar,jadu/pulsar