CM11 Themes: Add support for composed icons [2/2]

Requires f/b patch http://review.cyanogenmod.org/#/c/65179

Change-Id: Id9dd024448ddab41ef92177cf0d4cbc9abea0523
Remove all icons in onPreExecute()

Until the icons are loaded, we should show nothing in the icons
container.  This prevents users from seeing the wrong icons in
the view before they are loaded.

Change-Id: I9c0ec7df2cc9ed8a15012f47d9b4aa3caf8bb412
Automatic translation import

Change-Id: I4fb49dbd4938a15bc02a3304a6b5347a9d7c55da
Merge "CM11 Themes: Add support for composed icons [2/2]" into cm-11.0
Merge "Remove all icons in onPreExecute()" into cm-11.0
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_ThemeChooser into HEAD