Notice for users importing a game

[KirbysFoot]

A notice should be posted on the "Import Game" page saying that imported games cannot be removed from lichess.

Users import games from other tournaments etc with their personal information on them and cannot remove this information after the game is posted. This is dangerous for privacy.

Suggestion: before the game is uploaded, the user can change the details of the game (the players, where it was played, etc...) OR users are warned to delete personal information from the game (show them which lines to delete before uploading the game).

Issue: http://en.lichess.org/qa/218/how-to-erase-a-game