Fix last associated key prompt
Show probed key when creating a new machine
Restore "Generate Key" feature in machine-add dialog
Fix key "probing" state icon update
Add spinner when adding a backend
Merge branch 'master' into backends
Merge branch 'master' into keys_refactoring
Show non-associated keys when clicking "add key" in single machine view. Fix ajax-loader position
Merge branch 'keys_refactoring'
Merge branch 'backends'