Add node adding tip.

src/app/renderhandler.cpp

@@ -193,7 +193,6 @@ void RenderHandler::interruptPreview() {
 
 void RenderHandler::outOfMemory() {
     if(mRenderingPreview) {
-        TaskScheduler::sClearTasks();
         playPreview();
     }
 }

src/app/tips/17.txt

@@ -0,0 +1,2 @@
+Adding Nodes
+You can add nodes to existing paths by clicking on them while holding <b>CTRL</b>.

src/core/Animators/SmartPath/node.cpp

@@ -83,7 +83,6 @@ Node Node::sInterpolateNormal(const Node &node1, const Node &node2,
     } else {
         result.mCtrlsMode = CtrlsMode::symmetric;
     }
-    result.setCtrlsMode(result.mCtrlsMode);
     return result;
 }
 

src/core/Animators/SmartPath/smartpath.cpp

@@ -93,8 +93,6 @@ int SmartPath::actionInsertNodeBetween(const int prevId,
     const auto next = getNodePtr(nextId);
 
     if(!mNodesList.nodesConnected(prevId, nextId)) {
-        if(!prev->isNormal() || !next->isNormal())
-            RuntimeThrow("Invalid insert between not connected nodes");
         const int prevNormalId = prev->getNodeId();
         const int nextNormalId = next->getNodeId();
         const int nDiss = prevNormalId < nextNormalId ?