PY-22514, CPP-8763: Disable unneeded producers for plugins

using PyCharmInitialConfigurator
 * PyCharmInitialConfigurator has not been used for plugins.
 * It is now moved to python-community-plugin-core.xml to work with
 plugins as well

python/educational-python/src/com/jetbrains/python/edu/PyCharmEduInitialConfigurator.java

@@ -76,6 +76,7 @@ import com.intellij.util.ui.tree.TreeUtil;
 import com.jetbrains.python.PythonLanguage;
 import com.jetbrains.python.codeInsight.PyCodeInsightSettings;
 import com.jetbrains.python.inspections.PyPep8Inspection;
+import com.jetbrains.python.testing.universalTests.PyUniversalTestLegacyInteropKt;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -253,6 +254,11 @@ public class PyCharmEduInitialConfigurator {
         });
       }
     });
+
+    /*
+    According to PyUniversalTestLegacyInteropKt we need to call "init"
+     */
+    PyUniversalTestLegacyInteropKt.init(bus);
   }
 
   private static void patchMainMenu() {

python/pluginCore/META-INF/python-community-plugin-core.xml

@@ -18,6 +18,10 @@
       <interface-class>com.jetbrains.python.console.PythonConsoleRunnerFactory</interface-class>
       <implementation-class>com.jetbrains.python.console.PydevConsoleRunnerFactory</implementation-class>
     </component>
+    <component>
+      <implementation-class>com.jetbrains.python.PyCharmInitialConfigurator</implementation-class>
+      <headless-implementation-class/>
+    </component>
   </application-components>
 
 </idea-plugin>

python/src/com/jetbrains/python/PyCharmInitialConfigurator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2015 JetBrains s.r.o.
+ * Copyright 2000-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,7 +38,7 @@ import javax.swing.*;
  * @author yole
  */
 @SuppressWarnings({"UtilityClassWithoutPrivateConstructor", "UtilityClassWithPublicConstructor"})
-public class PyCharmInitialConfigurator {
+public final class PyCharmInitialConfigurator {
   @NonNls private static final String DISPLAYED_PROPERTY = "PyCharm.initialConfigurationShown";
 
   public PyCharmInitialConfigurator(MessageBus bus, final PropertiesComponent propertiesComponent, final FileTypeManager fileTypeManager) {