Add &nbsp; to the target language selector

The target language selector has two consecutive <span> elements -
ULS link and its label. Apparently, Firefox thinks that it's
one word and connects them if they are written in the Arabic script.

Replacing the padding that separated them with &nbsp; so that the
words would be probably separated.

Change-Id: I233951fbffcb82e1ca523d7901716255d7222c3b
Merge "Add &nbsp; to the target language selector"