Feature/filesystem cleanup (#1587)

* Adapting to the changes in Ghoul
* First step of moving filesystem functions to std
* Remove persistence flag from cachemanager

modules/spacecraftinstruments/rendering/renderablemodelprojection.cpp

@@ -183,7 +183,7 @@ void RenderableModelProjection::initializeGL() {
 
     _projectionComponent.initializeGL();
 
-    float bs = boundingSphere();
+    double bs = boundingSphere();
     _geometry->initialize();
     setBoundingSphere(bs); // ignore bounding sphere set by geometry.
 }

modules/spacecraftinstruments/rendering/renderableplaneprojection.cpp

@@ -196,9 +196,7 @@ void RenderablePlaneProjection::loadTexture() {
             _texture = std::move(texture);
 
             _textureFile = std::make_unique<ghoul::filesystem::File>(_texturePath);
-            _textureFile->setCallback(
-                [&](const ghoul::filesystem::File&) { _textureIsDirty = true; }
-            );
+            _textureFile->setCallback([this]() { _textureIsDirty = true; });
         }
     }
 }