Improve post-commit message

[korenyushkin]

When I first committed the code to Git, I thought there was a problem:

• Click Commit
• Type a message
• Submit the message
• See an information popup that tells me "Nothing to commit"

It was only after poking around here and there that I realised this wasn't a response to my action, but rather the information about the next commit.

Suggestion: after I commit, make the message say "Successfully committed rev xyz", and only say "Nothing to commit" the next time I visit this screen.