Merge pull request #88 from askeing/Bug_867031

Bug 867031 - [CustomizeUI] Cannot preload contacts during build time. r=mwu
Revert "Merge pull request #88 from askeing/Bug_867031"

This reverts commit 49469de4063a797776230194c2da019f6a4bcdbf, reversing
changes made to 917cb23483a02eb70d5b86a1a4d2eae65adab2d4.

This was breaking builds, see Bug 872522
Revert "Revert "Merge pull request #88 from askeing/Bug_867031""

This reverts commit e6beb3cf80ed83f12e1713799d9fcccca6f3a996.