Bug 1001995 - Remove / fix remnants of the forwarddisabled attribute. r=mdeboer

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extra : rebase_source : 4c94c0cb923183353ee7ba9105b917ae3836b811
Bug 1001471 - Adjust the popup notification anchor box's padding for when the forward button is hidden. r=mdeboer

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extra : rebase_source : 12585338bcf5cb7fedd1e8aa73a985aa09882950