Template extension spring configuration support

- similar pattern to existing script bean extension support
 - new root model helper objects and custom methods can be added via spring configuration
Cleanup of script extension spring support
Fix to thread safety of configured script extension beans that use the Scopable interface

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5369 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

config/alfresco/script-services-context.xml

@@ -9,6 +9,8 @@
         </property>
     </bean>
     
+    <!-- base config implementation that script extension beans extend from - for auto registration
+         as a global script with the ScriptService -->
     <bean id="baseScriptImplementation" abstract="true" init-method="register">
         <property name="scriptService">
             <ref bean="scriptService"/>
@@ -28,7 +30,7 @@
         <property name="serviceRegistry">
             <ref bean="ServiceRegistry"/>
         </property>
-    </bean>        
+    </bean>
     
     <bean id="actionsScript" parent="baseScriptImplementation" class="org.alfresco.repo.jscript.Actions">
         <property name="scriptName">
@@ -37,7 +39,7 @@
         <property name="serviceRegistry">
             <ref bean="ServiceRegistry"/>
         </property>
-    </bean>    
+    </bean>
 
     <bean id="searchScript" parent="baseScriptImplementation" class="org.alfresco.repo.jscript.Search">
         <property name="scriptName">
@@ -49,7 +51,7 @@
         <property name="storeUrl">
             <value>${spaces.store}</value>
         </property>
-    </bean>     
+    </bean>
 
     <bean id="classificationScript" parent="baseScriptImplementation" class="org.alfresco.repo.jscript.Classification">
         <property name="scriptName">
@@ -61,7 +63,7 @@
         <property name="storeUrl">
             <value>${spaces.store}</value>
         </property>
-    </bean> 
+    </bean>
 
     <bean id="peopleScript" parent="baseScriptImplementation" class="org.alfresco.repo.jscript.People">
         <property name="scriptName">
@@ -73,7 +75,7 @@
         <property name="authorityDAO">
             <ref bean="authorityDAO"/>
         </property>
-    </bean>    
+    </bean>
 
     <bean id="sessionScript" parent="baseScriptImplementation" class="org.alfresco.repo.jscript.Session">
         <property name="scriptName">
@@ -82,7 +84,7 @@
         <property name="serviceRegistry">
             <ref bean="ServiceRegistry"/>
         </property>
-    </bean> 
+    </bean>
 
     <bean id="scriptBehaviour" abstract="true">
         <property name="serviceRegistry">