Fix viewFilter._arrayMatches()

The filtered copy list was not assigned back to the variable and
accidently we were comparing the value.length instead of the filter.terms.length
to check whether all tags have matched or not.

h/static/scripts/services.coffee

@@ -736,12 +736,13 @@ class ViewFilter
     matches = true
     # Make copy for filtering
     copy = value.slice()
-    copy.filter (e) ->
-      not match filter.terms, e
 
-    if (filter.operator is 'and' and copy.length < value.length) or
+    copy = copy.filter (e) ->
+      match filter.terms, e
+
+    if (filter.operator is 'and' and copy.length < filter.terms.length) or
     (filter.operator is 'or' and not copy.length)
-        matches = false
+      matches = false
     matches
 
   _anyMatches: (filter, value, match) ->