Bug 955371 - Improve the two "weekly" group strings in the log viewer, r=clokep.

im/content/viewlog.js

@@ -256,8 +256,8 @@ chatLogTreeView.prototype = {
     // messenger.properties. The order is the reverse of that in which
     // they will appear in the logTree.
     let firstgroups = {
-      twoWeeksAgo: [],
-      lastWeek: []
+      previousWeek: [],
+      currentWeek: []
     };
 
     // today and yesterday are treated differently, because they represent
@@ -280,12 +280,12 @@ chatLogTreeView.prototype = {
         continue;
       }
       else if (timeFromToday <= kWeekInMsecs) {
-        group = firstgroups.lastWeek;
+        group = firstgroups.currentWeek;
         if (log.format == "json")
           title = formatWeekday(logDate);
       }
       else if (timeFromToday <= kTwoWeeksInMsecs)
-        group = firstgroups.twoWeeksAgo;
+        group = firstgroups.previousWeek;
       else {
         logDate.setHours(0);
         logDate.setMinutes(0);

im/locales/en-US/chrome/instantbird/instantbird.properties

@@ -110,10 +110,16 @@ targetChangeable=\nClick to change
 # %S will be replaced by the name of a buddy of the name of a chat room.
 logs=%S logs
 
+#LOCALIZATION NOTE
+# These are special entries in the log tree for the corresponding days.
 log.today=Today
 log.yesterday=Yesterday
-log.lastWeek=Last Week
-log.twoWeeksAgo=Two Weeks Ago
+
+#LOCALIZATION NOTE
+# These are special groups in the log tree for the last 3-7 days and
+# the last 8-14 days.
+log.currentWeek=This Week
+log.previousWeek=Last Week
 
 #LOCALIZATION NOTE
 # This is shown when an unknown command (/foo) is attempted. %S is the command.