Test coverage for vnccollab.content.browser

vnccollab/      covered 92% (31 of 409 uncovered)
    content/      covered 92% (31 of 409 uncovered)
        browser/      covered 97% (4 of 145 uncovered)
            author.py      covered 88% (3 of 25 uncovered)
            following.py      covered 99% (1 of 116 uncovered)
            __init__.py      covered 100% (0 of 1 uncovered)
            interfaces.py      covered 100% (0 of 3 uncovered)