build 180804. configurable command bindings for scroll wheel, minor bug fixes

editormode.cpp

@@ -87,8 +87,6 @@ editor_mode::update() {
 
     simulation::is_ready = true;
 
-    m_input.poll();
-
     return true;
 }
 
@@ -250,6 +248,12 @@ editor_mode::on_mouse_button( int const Button, int const Action, int const Mods
     m_input.mouse.button( Button, Action );
 }
 
+void
+editor_mode::on_event_poll() {
+
+    m_input.poll();
+}
+
 bool
 editor_mode::mode_translation() const {