Checking for missing page does not need content object

We can check via WikiPage, just as is done for non-entity
content, if trying to view a non-existing entity.

Change-Id: I3222cf1381431b6ca8969b5ea8566ad22f2fe803
Fixed fingerprintview QUnit tests

Change-Id: I2692e27844d59034cbe2bbdf29a80d3a4dcce0f1
Merge "Fixed fingerprintview QUnit tests"
Merge "Checking for missing page does not need content object"