CSS: Temporarily omit pagelib CSS
CSS: Temporarily omit pagelib CSS

The node_modules live in a different location in production, so hard-
coding the pagelib CSS path caused deployment to fail.

Let's work on a better way of getting at the pagelib CSS, and then restore
this.

Change-Id: I2da6bd9030f54df133a7f48622b4e92856a5d6e2

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps