Dotfile install is removing browser config

[Stefgug]

In windows setup,"Linking your default browser to Ubuntu" is before the Dotfiles section. So the exports to .zshrc for the $BROWSER and $GH_BROWSER are lost during the zsh install.sh (a zshrc.backup is created though).

Easy fix would be to move the "Linking your default browser to Ubuntu" after the Dotfiles section.

[julesvanrie]

Note to self: moving it down will break the gh authentication instructions (won't open the browser automatically).

So would need to change those instructions which could become confusing (macOS would be different from Windows - don't feel like splitting up the partial).

Or do a double config (might get messy).

To align with WebDev setup. Reusing partials from lewagon/setup.