Added Test for Categories

Commit By: Robert
Categories page works

Commit By: Robert
Category test added

    Test fails as expected

Commit By: Robert
Category test works

    controller implemented

Commit By: Robert
Added category.html

Commit By: Robert
Category test updated

    now includes routeParams

Commit By: Robert
Category page works

Commit By: Robert
Categories page links to category

Commit By: Robert
Fixed url for single Wiki

   now wiki/ instead of api/

Commit By: Robert