Remove requirement on globally configured git name and email

[alfredolito]

Setting the name and email in ~/.password-store/.git/config is insufficient for Ripasso. Ripasso requires these configurations to be set globally, which seems unnecessary, as repository-specific settings should suffice.

Current behaviour:

Ripasso won't start.

Error message:

You haven't configured you name and email in git, doing so will make cooperation with your team easier, you can do it like this:
git config --global user.name "John Doe"
git config --global user.email "[email protected]"

...(etc).

Desired behaviour:

Start ripasso, and use the configuration in the ~/.password-store git repository.