Merge pull request #43 from Nanolx/master

debian/ packaging scripts
Rename signal, sessionFinished -> stopped.
Stop the display after display server is stopped.

This is for recovering from display server crashes etc.
Update CONTRIBUTORS.
Add --help command line option
Adjust PictureBox component height to avoid clipped user name at bottom
Merge pull request #45 from rshah/master

Adjust PictureBox component height to avoid clipped user name at bottom
Merge pull request #49 from Nanolx/master

Debian: updated PAM + Qt5
Merge pull request #50 from Nanolx/master

Small fix in Debian init-script
Implement a more complete version of DisplayManager interface.

Interfaces extracted from lightdm through dbus introspection.
User nicer names.
Set seat path property of session.
Implement user name property of session.
Remove unused header.
Fix build with qt5.
Fix seat property.
Seat name should start with lower case 'seat'.
Some extra checks for finding unused display.

Along with some more lambda goodness.
Seat: Add destructor that stops seat automatically.
Log message when daemon stopped.