Move dependency to IPython notebook to a right place in Python plugin.

python/build/python-plugin-dependencies.xml

@@ -5,4 +5,6 @@
   <depends optional="true" config-file="python-rest-plugin.xml">org.jetbrains.plugins.rest</depends>
   <depends optional="true" config-file="intellilang-python-support.xml">org.intellij.intelliLang</depends>
 
+  <xi:include href="/META-INF/ipython-notebook.xml" xpointer="xpointer(/idea-plugin/*)"/>
+
 </idea-plugin>

python/pluginSrc/META-INF/python-plugin-core.xml

@@ -2,8 +2,6 @@
   <!-- Components and extensions declared in this file work ONLY in the Python plugin,
        both Community and Professional versions. -->
 
-  <!--<xi:include href="/META-INF/ipython-notebook.xml" xpointer="xpointer(/idea-plugin/*)"/>-->
-
   <extensions defaultExtensionNs="com.intellij">
     <moduleType id="PYTHON_MODULE" implementationClass="com.jetbrains.python.module.PythonModuleType"/>
     <facetType implementation="com.jetbrains.python.facet.PythonFacetType"/>