Update the icons from papirus-icon-theme (20190720)

Created by: SmartFinn

• Added new icons:
  • folder-documents-open
  • folder-download-open
  • folder-music-open
  • folder-pictures-open
  • folder-publicshare-open
  • folder-remote-open
  • folder-templates-open
  • folder-videos-open
• Added new colors of folder:
  • deeporange
  • indigo
  • pink
  • white
• Updated user-trash and user-trash-full icons
• Changed colors of monochrome icons:
  • #d3dae3 to #dfdfdf
  • #31363b to #444444
• Removed folder-saved-search icon from places