Open 8.14.0, and put the MO diagram back on the menu

Re-registers MoDiagramPanel now that 8.13.0 is out, so #132 can be
worked on against a build that shows it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EFMUNbw2UpRPmgsqviAowb

Author: andy

data/client/config/PropertyPanelDescriptor.xml

@@ -181,22 +181,13 @@
     <property name="MO"/>
   </PropertyPanel>
 
-  <!-- The correlation diagram is NOT registered for v8.13.0.
-       It is built and its machinery is tested, but what it draws is
-       not good enough to put in front of anyone yet: see GitHub #132.
-       Re-register this block when it is.
-
-       The panel class is still compiled and still reachable from the
-       tests, so nothing about removing it here is a revert.
-
   <PropertyPanel>
     <name>MO Diagram</name>
     <class>MoDiagramPanel</class>
     <consumer>true</consumer>
     <allowPin>false</allowPin>
     <property name="ORBENG"/>
   </PropertyPanel>
-  -->
 
   <PropertyPanel>
     <name>Vibrational Frequencies</name>

data/client/config/Version

@@ -1 +1 @@
-8.13.0
+8.14.0