Re-Add color overlay (#311)

* fixed Chaperone toggle, toggle state on launch

* made update rates based on variable frame rate assuming 90 default

* added overlay color back in

* fixed opacity value not synching

* updated to ovr 1.8.19

* fixed license issue

* rolled back ovr update

* fixed overlay toggle state, formatting, and clamped max opacity to .85%

src/tabcontrollers/SteamVRTabController.cpp

@@ -7,6 +7,8 @@ namespace advsettings
 {
 void SteamVRTabController::initStage1()
 {
+    m_k_steamVrSettingsUpdateCounter
+        = utils::adjustUpdateRate( k_steamVrSettingsUpdateCounter );
     dashboardLoopTick();
 }
 
@@ -17,7 +19,7 @@ void SteamVRTabController::initStage2( OverlayController* var_parent )
 
 void SteamVRTabController::dashboardLoopTick()
 {
-    if ( settingsUpdateCounter >= k_steamVrSettingsUpdateCounter )
+    if ( settingsUpdateCounter >= m_k_steamVrSettingsUpdateCounter )
     {
         vr::EVRSettingsError vrSettingsError;