Bug 1043372 - sharing indicator in main menu for keyboard accessibility, r=florian,ui-r=phlsa

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extra : rebase_source : e9beec954c65b126c2653032066b4c1e276e6929
Bug 1053245 - ignore number-only hosts in showing notification bars for keyword URI redirection, r=jaws

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extra : rebase_source : bd1932037f7b2db212db5943a12ae7d377b49bbe