Some tracks were reported as '7 days ago', others as 'about a week ago' and...

Some tracks were reported as '7 days ago', others as 'about a week ago' and others still as '1 weeks ago'.
Now these are all 'about a week ago'.

nixtape/utils/human-time.php

@@ -74,6 +74,8 @@
             break;
         case ($diff < 604800):
             # less than a week
+            if (round($diff / 86400) == 7)
+                return 'about a week ago';
             return round($diff / 86400) . ' days ago';
             break;
         case ($diff < 691200):
@@ -82,6 +84,8 @@
             break;
         case ($diff < 2764800):
             # less than a month
+            if (round($diff / 691200) == 1)
+                return 'about a week ago';
             return round($diff / 691200) . ' weeks ago';
             break;
         case ($diff < 4579200):