Hi-Angel

// Tested with ArchLinux. Cures dolphin/nautilus error "Not authorized to perform action" upon mounting.
// Sources: http://smcv.pseudorandom.co.uk/2015/why_polkit/ and https://github.com/coldfix/udiskie/wiki/Permissions
// 1. make sure you are in "storage" group
// 2. create /etc/polkit-1/rules.d/50-udiskie.rules file with the following content
polkit.addRule(function(action, subject) {
  var YES = polkit.Result.YES;
  // NOTE: there must be a comma at the end of each line except for the last:
  var permission = {
    // required for udisks1:
    // "org.freedesktop.udisks.filesystem-mount": YES,