Fix marquee on app snippet in InstalledAppDetails

First need to fix layout of the app_item as the widget was running
over the end of the view, do this by switching to a RelativeLayout.

Then select the view so it can actually marquee.

Bug: 22043942
Change-Id: Ieb94649ccf3dc8dcf56014c02fcdc06da71a9a62
2 files changed