D21931: [kmoretools] Add icons to download and install actions

[Nicolas Fella]

nicolasfella added reviewers: gregormi, ngraham.

REPOSITORY
  R304 KNewStuff

REVISION DETAIL
  https://phabricator.kde.org/D21931

To: nicolasfella, gregormi, ngraham
Cc: kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns