Code refactoring for event namespaces

- Code refactoring for event namespaces
- Added bool()
- Added handlerExist()
- Added nsEvents()
- Added fnAddScript()
- Added fnAddCSS()
- Added fnGetQueryToString()
- Added fnGetQueryToJSON()
- Added fnGetDataToJSON()
- Added fnCloneObject()
- Added fnDateFromISO8601()
- Added $().position()
- Modified fnGetDate()
- Modified fnGetHtmlText()
- Modified fnShowTooltip()
- Modified fnShowDialog()
- Modified fnLoading()
- Modified $().fnEasyValidate()