Bug 993932: remove border-color transition to remedy TART regression. r=dao, a=sylvestre.

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extra : transplant_source : %D2%10%DB%0Fd%95%134%B8%7F%B7%BFh%7F%BE%80D%9D%D8%5C
Bug 995161 - Customize mode can still break after bootstrapped add-on with custom legacy:true toolbar restarts. r=Gijs, a=sylvestre.

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rename : browser/components/customizableui/test/browser_989609_bootstrapped_custom_toolbar.js => browser/components/customizableui/test/browser_bootstrapped_custom_toolbar.js
extra : transplant_source : %8FSi%BCs%A1X%C3%EC%0D%8B%D3.%08%BB%1D%F4%2C%7C%04
Bug 989683 - restrict how we inherit the menubar text color to tabsintitlebar cases on non-aero, r=dao, a=sylvestre.

--HG--
extra : transplant_source : %F4%0E%90%A9%BD%FE_%91%D6F%96%BE%06w%DE%E0%BB%A4%DB%BC
Bug 987407 - Set the pref startup.homepage_override_url in-product for beta 29. r+a=gavin

This ensures that users who upgrade via a pave-over install still see the whatsnew tour.