### Please describe the problem.
git annex webapp created SSH keys for remote directory. SSH keys have wrong permission (chmod 600 fixed it) and thus the key-based login to the remote fails. 

### What steps will reproduce the problem?
Creating a SSH remote using the git annex webapp. 

### What version of git-annex are you using? On what operating system?
'current linux build for amd64', downloaded Mar 6th 2014, on Ubuntu 12.04.4 LTS.

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