Remove items keyword from list in my settings

fixing https://bugzilla.redhat.com/show_bug.cgi?id=1422416

Remove "items" keyword from the dropdown list of Default Items Per Page.
Remove the keyword also from the dropdown list of Topology Default Items
in View.

app/helpers/ui_constants.rb

@@ -53,14 +53,14 @@ module UiConstants
 
   # Per page choices and default
   PPCHOICES = [
-    [N_("5 items"), 5],
-    [N_("10 items"), 10],
-    [N_("20 items"), 20],
-    [N_("50 items"), 50],
-    [N_("100 items"), 100],
-    [N_("200 items"), 200],
-    [N_("500 items"), 500],
-    [N_("1000 items"), 1000]
+    [N_("5"), 5],
+    [N_("10"), 10],
+    [N_("20"), 20],
+    [N_("50"), 50],
+    [N_("100"), 100],
+    [N_("200"), 200],
+    [N_("500"), 500],
+    [N_("1000"), 1000]
   ]
 
   # Per page choices for task/jobs