Use the 4K milkyway texture on default for better performance

Make featured properties and space/time widget easy to disable
Add setting for setting the bounds of the delta time slider
Add exponent to all numerical properties and use where appropriate
Add properties to Guicomponents that collapse the title bar
Add new F2 key to only display the main property window

modules/imgui/src/guihelpcomponent.cpp

@@ -37,9 +37,12 @@ GuiHelpComponent::GuiHelpComponent()
 {}
 
 void GuiHelpComponent::render() {
+    ImGui::SetNextWindowCollapsed(_isCollapsed);
+
     bool v = _isEnabled;
     ImGui::Begin("Help", &v, size, 0.5f);
     _isEnabled = v;
+    _isCollapsed = ImGui::IsWindowCollapsed();
     ImGui::ShowUserGuide();
     ImGui::End();
 }