Bug 608864 - New mail icon is so tiny and uncontrasty that it's nearly invisible and therefore pointless. ui-r+r = JosiahOne
Bug 923648 - Create and use a tabs directory on Linux and Windows r=Paenglab

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rename : mail/themes/linux/mail/icons/tabActiveEnd.svg => mail/themes/linux/mail/tabs/tabActiveEnd.svg
rename : mail/themes/linux/mail/icons/tabActiveMiddle.svg => mail/themes/linux/mail/tabs/tabActiveMiddle.svg
rename : mail/themes/linux/mail/icons/tabActiveStart.svg => mail/themes/linux/mail/tabs/tabActiveStart.svg
rename : mail/themes/linux/mail/icons/tabBackgroundEnd.png => mail/themes/linux/mail/tabs/tabBackgroundEnd.png
rename : mail/themes/linux/mail/icons/tabBackgroundMiddle.png => mail/themes/linux/mail/tabs/tabBackgroundMiddle.png
rename : mail/themes/linux/mail/icons/tabBackgroundStart.png => mail/themes/linux/mail/tabs/tabBackgroundStart.png
rename : mail/themes/linux/mail/icons/tabDragIndicator.png => mail/themes/linux/mail/tabs/tabDragIndicator.png
rename : mail/themes/windows/mail/icons/tab-arrow-left-inverted.png => mail/themes/windows/mail/tabs/tab-arrow-left-inverted.png
rename : mail/themes/windows/mail/icons/tab-arrow-left.png => mail/themes/windows/mail/tabs/tab-arrow-left.png
rename : mail/themes/windows/mail/icons/tabActiveEnd.png => mail/themes/windows/mail/tabs/tabActiveEnd.png
rename : mail/themes/windows/mail/icons/tabActiveEnd.svg => mail/themes/windows/mail/tabs/tabActiveEnd.svg
rename : mail/themes/windows/mail/icons/tabActiveMiddle.png => mail/themes/windows/mail/tabs/tabActiveMiddle.png
rename : mail/themes/windows/mail/icons/tabActiveMiddle.svg => mail/themes/windows/mail/tabs/tabActiveMiddle.svg
rename : mail/themes/windows/mail/icons/tabActiveStart.png => mail/themes/windows/mail/tabs/tabActiveStart.png
rename : mail/themes/windows/mail/icons/tabActiveStart.svg => mail/themes/windows/mail/tabs/tabActiveStart.svg
rename : mail/themes/windows/mail/icons/tabBackgroundEnd.png => mail/themes/windows/mail/tabs/tabBackgroundEnd.png
rename : mail/themes/windows/mail/icons/tabBackgroundMiddle.png => mail/themes/windows/mail/tabs/tabBackgroundMiddle.png
rename : mail/themes/windows/mail/icons/tabBackgroundStart.png => mail/themes/windows/mail/tabs/tabBackgroundStart.png
rename : mail/themes/windows/mail/icons/tabDragIndicator.png => mail/themes/windows/mail/tabs/tabDragIndicator.png