Translated to portuguese-brazil.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@8210 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/hudson/widgets/HistoryWidget/index_pt_BR.properties

-trend=
-for\ all=
-for\ failures=
+trend=tend\u00EAncia
+for\ all=para todas
+for\ failures=para falhas

core/src/main/resources/hudson/widgets/Messages_pt_BR.properties

-BuildHistoryWidget.DisplayName=
+BuildHistoryWidget.DisplayName=Hist\u00F3rico de Constru\u00E7\u00E3o