optional use sudo when execution zfs commands
  * necessary under linux when running as non root
rename flag 'sudo' to 'use-sudo'
move javascript files under 'js' folder
support for sub zfs filesystems (datasets)
build linux only for 64bit
  * zfsonlinux supports only 64bit linux
  * under 32bit linux the zfs control dir are not created (.zfs)
  * no snapshots automounted
add text to 'revert change' button
auto-select dataset if only one dataset is available
absolute position for loading spinner
  * page content was moving down / up when spinner was shown
cleanup notifications
  * implement as a service
  * simplified ui
  * show at the page bottom in the ui
    before there was to much free space in the page header
use apostrophe
new messages view with message-history
  * message-histroy for the current session
pack side-by-side diff in bootstrap container
update README for v0.0.7