EXT-6655 Fixed Made the default busy message repsonse localizable with already...

EXT-6655 Fixed Made the default busy message repsonse localizable with already existing account settings

- The root of busy response problem is that this text is located in non-localizable xml and, to make things worse, may be changed by user. So usual translation approach is little help here. So busy response was set the following way(EXT-5885)- on first run, string was written there from strings xml and was never changed later without direct user actions. So after changin locale message always remained the same.

- To make this string localize each time locale is changed and if it is the same as default message, new setting was added- BusyResponseChanged which is TRUE if user's busy message differ's from default. If it is true, we do nothing when locale changes, otherwise we set default message from current locale as user's busy message.

- Old transitional code from DEV-24146 was removed in this diff including unnecessary "BusyModeResponse2" setting(it is not needed because we'll anyway have to set busy message to default after first run of viewer after this fix and now busy response will be stored in "BusyModeResponse").

Warning! If user modified busy response message before this fix, it will be reset to default after first postfix run.

Reviewed by Richard Linden at https://codereview.productengine.com/secondlife/r/350/

--HG--
branch : product-engine