fixed bug 20668: Translate xmlEngine docuemnts without parameters

Related to issue 19728: Do more JS code formatting

Fixes issue 20683: JS error in "Window Personalization" window
The case that the form personalization was opened from the window personalization window hammer icon
was not taken into account, also solve the issue that deleting and then saving a new form personalization
record results in an error

Fixes issue 20685: Fixed Typo.

Issue 20704: Restore removed code
- The template of Openbravo.properties has the property authentication.class=
that is not the same of null (not defined)
- If we remove this code, every instance using the default template will get an
exception when login since it will try to create a new instance of an empty string

Fixes issue 20703: Orphan line: don't support products with attributes

Fixes issue 20704: Added missing init() call
- When handling the exception of, the flow falls back to the DefaultAuthenticationManager,
we need to always call the init method to ensure proper initialization

Fixes issue 20704: Improvements in AuthenticationManger
- The authenticate() method of the DefaultAuthenticationManager will check if a
"loginURL" attribute is present in the request and use if for redirecting the user,
otherwise it will use the default login url

Issue 20704: Code improvements in authentication header
- There is no need to create a HttpBaseServlet object as the jsp itself has the
required methods used by the AuthenticationManager
- There is no need to call the init, since getAuthenticationManager calls it implicitly

Related to issue 20551. Improve the for onload and getSnashot