Bug 1084109 - displayStatusText() is not implemented in Thunderbird r=aleth ui-r=richard.marti
Bug 610152 - Events randomly disappear from the view pane. View returns when TB is restarted. r=philipp
Bug 1087529 - Revert do not track preferences to be a simple on/off switch; port of bug 1042135. r=mkmelin ui-r=paenglab a=clokep

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extra : amend_source : 1797bd6069198babce7077a9feb92cc907cea74c