Bug 946987 - Add 2x tab images for Windows and use them for 1.25dppx and higher. r=mconley a=Sylvestre
Bug 980220 - UITour: [Linux] Change the highlight style to have better fallback without an X compositor. r=Unfocused, ui-r=mmaslaney a=sylvestre
Bug 986808 - don't insert duplicate separators in sidebar widget, r=mconley a=lsblakk
Bug 989289 - only migrate builtin toolbars, also migrate toolbox, r=mconley a=sylvestre

--HG--
extra : amend_source : edd765eb00361e401149947650701609693f9e52
extra : transplant_source : yNz%EC%5Dz%7D%A2Xe0u%07%BB%C0%0D%BES%3A/