Ubuntu UI Toolkit

Merge proposals dependent on lp://staging/~3v1n0/ubuntu-ui-toolkit/slotslayout-paddings-changes-updates-size

  1. slotslayout-paddings-changes-updates-size
  2. Dependent merge proposals

lp://staging/~3v1n0/ubuntu-ui-toolkit/slotslayout-paddings-changes-updates-size has no merge proposals.