prefer US English and use UTF-8
.aliases: Add `-F` to `ls` aliases
Don’t do this for the default `ls`, though.

https://github.com/mathiasbynens/dotfiles/commit/a563329a36018354f8607aa20f75b5aac241785a
 .gitconfig: Remove global remote branch

This causes duplicate remotes to be created, potentially leading Git to throw errors when `push`ing.

https://github.com/mathiasbynens/dotfiles/commit/3803a98eaf001e2b96cb6513264c73a845035093