reports: made tooltip clearer in ccp report (#913081)

uptime and existence now have tooltip in the format:
'DDd HHh MMm' (upper case letters is the actual data)

Bug-Url: https://bugzilla.redhat.com/913081

Change-Id: I3505c6c3c0d8e6dc353d07007bb197a30890c0c3
Signed-off-by: Yaniv Dary <ydary@redhat.com>