Temporary remove powerline as local package
Squashed 'src/local-packages/powerline/' content from commit 1a57009

git-subtree-dir: src/local-packages/powerline
git-subtree-split: 1a570099a814ea17f151cca7ad44334741b85371
Merge commit '48e53d6a7d9d2109743c808e2d6801479202a2e0' as 'src/local-packages/powerline'