D18288: Make the clock svg's shadows more logically correct and visually appropriate

[Shubham]

shubham added a dependent revision: D17751: Add shadow to Hour's hand.

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D18288

To: ngraham, #vdg, #plasma, davidedmundson
Cc: kde-frameworks-devel, michaelh, ngraham, bruns