Remove usage of GtkDialog

• Replace ZoomInDialog with a toast ( #578 (closed))
• Replace LocationServiceDialog with a toast ( #579 (closed))
• Refactor OSMEditDialog (#758 (closed))
• Refactor OSMAccountDialog ( !350 (merged))
• Refactor SendToDialog (#763)
• Refactor ExportViewDialog
• Replace GtkFileChooserNative with GtkFileDialog
  • Replace folder dialog in ExportViewDialog with FileDialog ( #598 (closed), !344 (closed))
  • Replace shape layer dialog in MainWindow with FileDialog