Bug 840346: Flat URL bar. [r=mfinkle]

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extra : rebase_source : 25e8b78e6ef97e3bb1e0ccb701bd98d9d1b24e4c
Bug 840346: Cleanup persona methods. [r=mfinkle]

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extra : rebase_source : 0f2e292f620640b21703306fe2796841e90954e1
Bug 840346: Remove unwanted icons. [r=mfinkle]

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extra : rebase_source : e49ab63a955f8ecd29dcd911b7d5caac14bf009e
Bug 840346: Flat UI in about: pages. [r=mfinkle]

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extra : rebase_source : 147cbcc250e0a34055b6fd9520a0c8b377543b2d