Otherwise the index of the element relative to which we place it changes
depending on whether the element being positioned is placed before or after it.

Conflicts:
	builds/converse-no-locales-no-otr.min.js
	builds/converse-no-otr.min.js
	builds/converse.min.js
	builds/converse.website-no-otr.min.js
	builds/converse.website.min.js

* Make sure that the roster container has a fixed height, so that we can better
check whether the roster is overflowing.
* Call update after inserting the roster into the DOM

only shows when the roster is overflowing. updates #212

Update Chinese translation PO file

This reverts commit a7247a7c.

updates #83