Merge ~osomon/ubuntu-app-platform:add-ui-extras into ubuntu-app-platform:master

[Olivier Tilloy]

Add ubuntu-ui-extras for extra UI components.

This is being used by various apps including camera-app, terminal-app, and soon webbrowser-app too.

[Timo Jyrinki (timo-jyrinki)]

review: Approve

diff --git a/snapcraft.yaml b/snapcraft.yaml
index 870b0e3..c9cd641 100644
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@@ -73,6 +73,8 @@ parts:
         - libpulse0
         # ubuntu-sdk-libs
         - ubuntu-sdk-libs
+        # Extra UI components
+        - qtdeclarative5-ubuntu-ui-extras0.2
         # Calendar deps
         - qtcontact5-galera
         - qtorganizer5-eds