gui/elm/Window/Tray/Settings: Don't change manual sync button label (#1646)
gui/elm/Window/Tray/Settings: Don't change manual sync button label (#1646)

- Sync status is already shown in the status bar
- Using it as the button label can be confusing (e.g. errors)
cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop