Squashed 'plugin/floo/common/' changes from c3d0773..442101a

442101a Pep8 and pyflakes everything

git-subtree-dir: plugin/floo/common
git-subtree-split: 442101a809cfe664cd0e0f64bd7c7e75a1662266
Merge commit '07fb94b72e121fed8f97f14a1821939203f35738' into use_common_py
Pyflakes.