refs #751, info if user can directly update models

* modified login component, give hints
* user object has flag for direct write

src/blackmisc/network/authenticateduser.cpp

@@ -101,6 +101,11 @@ namespace BlackMisc
             return this->hasRole("MAPPINGADMIN") || this->isAdmin();
         }
 
+        bool CAuthenticatedUser::canDirectlyWriteModels() const
+        {
+            return this->isAdmin() || this->isMappingAdmin();
+        }
+
         CIcon CAuthenticatedUser::toIcon() const
         {
             return CIconList::iconByIndex(CIcons::StandardIconUser16);

src/blackmisc/network/authenticateduser.h

@@ -139,6 +139,9 @@ namespace BlackMisc
             //! Enabled
             bool isEnabled() const { return this->m_enabled; }
 
+            //! Entitled to directly update models
+            bool canDirectlyWriteModels() const;
+
             //! \copydoc BlackMisc::Mixin::Icon::toIcon()
             BlackMisc::CIcon toIcon() const;