Update kendo.messages.es-ES.js

Added widgets traduction:
- kendo.ui.Upload
- kendo.ui.RecurrenceEditor

Modified widgets traduction (just some words):
- kendo.ui.FilterCell
- kendo.ui.Pager
- kendo.ui.Grid
Merge pull request #419 from caesaram/patch-1

Update kendo.messages.es-ES.js