DNN-6211 - EVOQCONTENT - Localization - Fails if > 1 Language is enabled. jQuery failure

Changed way to make Redirect. Set RedirectLocation header before make any Write/Flush to keep connection alive. This prevents "Cannot redirect after HTTP headers have been sent" error.
DNN-6211 - EVOQCONTENT - Localization - Fails if > 1 Language is enabled. jQuery failure

Moved AsyncPostBackTimeout set in OnLoad to prevent that the value being overrided by Default.aspx.cs OnInit event.
DNN-6211 - EVOQCONTENT - Localization - Fails if > 1 Language is enabled. jQuery failure

Applied same fixes done in EnableContentLocalization.ascx.cs to LocalizePages.ascx.cs