Remove field placeholders (fixes #748)

All of them are either required, or empty by default, or for example
node name is later populated on first connection.
Correctly handle ro dirs in ro dirs etc
Genfiles should be random by default
Short benchmark test only by default
Don't get stuck in idle while syncing from a disconnecting node
Merge pull request #753 from AudriusButkevicius/ph

Remove field placeholders (fixes #748)
Don't require godep to build
Rename Repository -> Folder, Node -> Device (fixes #739)
Run go fmt -w
Run go fmt -w -s
Manual fixup
Rename FolderConfiguration.Directory to FolderConfiguration.Path
Migrate config
Change some text in UI to make more sense
Rebuild assets
Allow a single upgrade at a time
Add autoUpgrade coroutine (fixes #727)
Add autoUpgrade option in UI