Sanitize title during launchpad import.

Titles in launchpad may be larger than storyboard's 100 character
limit. If a long title is detected, we prepend it to the
description and truncate the title with an ellipsis.

Change-Id: Icec67b0ebaa5b1ba2497be09d9f4cc66147bd408
Merge "Sanitize title during launchpad import."