fix a little bug with get_page_html
Merge pull request #11 from slaporte/master

merge in testing changes
readd feedback tests
make backlinks return PageInfos instead of PageIdentifiers
make operation examples go through the same call_and_ret wrapper (for debugging)
make GetLinks return PageInfos instead of PageIdentifiers
accommodate feedbackv5 api changes
make random return PageInfos instead of PageIdentifiers
make GetRandomArticles, GetRandomCategories, GetRandomFilePages, and make inputless_inits work with inheritance
add basic GetPageInfo to misc
only print if debug is True