Add print job settings screen.

Added a list of active print jobs to the main print settings
screen. Selecting a print job from there leads to a print job
settings screen with more information about the print job and
actions to change the prit job state such as cancel and restart.

bug:10935736

Change-Id: Idd6826a998309941c3d8478dafe4b039c8ca4f45
13 files changed