[FIX] Only apply uppercase to Link title if namespace dictates so

The namespace defines if a Link title begins with an uppercase character.
The main namespace of Wiktionary, for example requires an exact match. As
the namespace always define the case, using the site case isn't necessary.

If the namespace doesn't report the case property it choses the site global
case property.

Bug: 69118 (partially)
Change-Id: If86346dc203c54d2e6631e3dddd106add3c34d30
Merge "[FIX] Only apply uppercase to Link title if namespace dictates so"