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Check for python warnings as well
Revert "Check for python warnings as well"

This reverts commit 2c5bab4bfc2af02d275c78a5598ab68e8187905a.
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Use alias instead of root in nginx config
Fetch error from generating key
Remove HOME from environment
Document additional nginx/uwsgi tweaks
Remove extra html markup
Plus/Minus are usually not translated as well
Improve SSH host key manipulation

* catch errors while scanning keys
* support ecdsa keys
* support for custom ports
Print ECDSA keys in admin interface as well
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Fixed INSTALL symlink (fixes #428)
Better error message
Factor out key reading
Better message for registration problems