Bug 879787 - Fix up old tests to use SpecialPowers. r=smaug, a=abillings.

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rename : content/base/test/test_bug383430.html => content/base/test/chrome/test_bug383430.html
Bug 889442 - Remove special about: pages code from DOM Storage.
r=mayhemer
Bug 889442 - Remove old and now unused chromeappsstore.sqlite from the profile dir.
r=ttaubert
Bug 889442 - Remove newTab page migration for chromeappsstore.sqlite
t=ttaubert
Bug 889469 - Bump marionette_client version to 0.5.34 r=jgriffin