Bug 1021389 - Local app search support for entry points is broken

https://bugzilla.mozilla.org/show_bug.cgi?id=1021389

Gaia-try runs:
https://tbpl.mozilla.org/?tree=Gaia-Try&showall=1&rev=e888f0e09444
https://tbpl.mozilla.org/?tree=Gaia-Try&showall=1&rev=b4a702245eef