Fix up some issues found when using the random connected service provider. Also, move validation checks of IClientServiceSiteUI2 into a method of that interface, since we need to handle the case where the default connection is currently incompatible.

_UI_AddListBoxItem=Add List Box Item
_UI_AddChoiceListItem=Add Choice List Item
_UI_ConfigureSBBType=Select System Building Block Type
_UI_AddViewPage=Add View Page
_UI_SelectViewPage=Select View Page