Using \x00 proven to be bad idea as some databases (eg. SQLite) does not
cope with string containing this. Using \x1e (Record Separator) should
be safe in this regard.

Fixes #266.

With configured origin remote in global git config, current approach
failed as it had half existing remote (repo.remotes.origin did not
exist, but git remote did show it).

Now we do not try to add origin if git already sees it and we configure
branches to fetch, this should also prevent fetching of branches we
don't follow.

Fixes #268.

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Currently translated at 64.8% (517 of 798)

Fix some typos in documentation

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Fix typo

Correct a typo in an exception

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Currently translated at 100.0% (798 of 798)

Currently translated at 100.0% (798 of 798)

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