Bug 1054945 - Main title Usage is not localized
Bug 1028224: email UI: settings chevrons and Load More as a button
Bug 1053258 - Change Search icon to Browser icon r=benfrancis
Merge pull request #22929 from KevinGrandon/bug_1053258_search_app_icon

Bug 1053258 - Change Search icon to Browser icon
Merge pull request #22991 from wilsonpage/1054945

Bug 1054945 - Main title Usage is not localized
Merge pull request #22224 from jrburke/bug1028224-email-ui-improvements

Bug 1043529 - email UI: "Load more messages" styling r=asuth