Page Comparison

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1. create "kUrlManager::show401($template = null)" method (:
   1. similar to "kUrlManager::show404"
   , but
   2. will be
   using "No Permission" template and
   1. sending "401" HTTP response code
   )
   2. will use "No Permission" template if none given directly
2. change top part (that configures redirect) of "kRequestManager::processPermissionError" method to:
   1. use "kUrlManager::show401" method
   2. get "$event" redirect params and do a SetVar on them right away (since no redirect will be happening)
3. change top part (that configures redirect) of "kDBEventHandler::_processItemLoadingError" method to use "kUrlManager::show401" method
4. change part (that configures no permission redirect) of "kPermissionsHeleper::getPermissionTemplate" method to:
   1. use "kUrlManager::show401" method
   2. pass $params['no_permissions_template'] to it, when available and "null" otherwise
   3. doing SetVar right away (remove debug mode check) instead of setting keys into "$redirect_params" array

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