Bug 979232 - adjust Australis' bookmarks animation for rtl, r=dao

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extra : rebase_source : f4608fdc5cc362ed4cff7f37e1f428c203ab0cfe
Bug 978050 - fix the hovered outline-color for Australis' customize mode's drag indicators for tabsintitlebar menubar/tabstoolbar to be the caption text color, r=MattN

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extra : rebase_source : a9b47092590cdba208bb20b7aed06fcc18ac94b9