Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Create a new Article in English
2. Goto languages tab
3. Add a 'German' language instance (this clones the English &
redirects back to Authoring tab)
4. Go back to languages tab (verify the breadcrumb shows 'de' is
current item)
5. Click the 'delete' link next to the english instance 
  
Actual results:
500 Servlet Exception

com.arsdigita.util.AssertionError:
[com.arsdigita.cms.contenttypes.Article:{id=23001}]
equals [com.arsdigita.cms.contenttypes.Article:{id=23001}]
	at com.arsdigita.util.Assert.unequal(Assert.java:313)
	at com.arsdigita.cms.ContentBundle.removeInstance(ContentBundle.java:237)
	at
com.arsdigita.cms.ui.item.ItemLanguagesTable$InstanceDeleter.cellSelected(ItemLanguagesTable.java:160)
	at com.arsdigita.bebop.Table.fireCellSelected(Table.java:238)
	at com.arsdigita.bebop.Table.respond(Table.java:538)
	at com.arsdigita.bebop.PageState.respond(PageState.java:367)
	at com.arsdigita.bebop.Page.process(Page.java:701)
	at com.arsdigita.bebop.Page.process(Page.java:683)
	at com.arsdigita.bebop.Page.buildDocument(Page.java:737)
	at com.arsdigita.cms.dispatcher.CMSPage$1.excurse(CMSPage.java:280)
	at com.arsdigita.cms.CMSExcursion$1.excurse(CMSExcursion.java:80)
	at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:57)
	at com.arsdigita.cms.CMSExcursion.run(CMSExcursion.java:75)
	at com.arsdigita.cms.dispatcher.CMSPage.dispatch(CMSPage.java:294)
	at
_packages._content_22dsection._www._admin._item__jsp._jspService(/packages/content-section/www/admin/item.jsp:41)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
	at com.caucho.jsp.Page.subservice(Page.java:506)
	at
com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:222)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:103)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:80)
	at
com.arsdigita.dispatcher.DispatcherHelper.forwardHelper(DispatcherHelper.java:190)
	at
com.arsdigita.dispatcher.DispatcherHelper.forwardRequestByPath(DispatcherHelper.java:219)
	at
com.arsdigita.dispatcher.DispatcherHelper.forwardRequestByPath(DispatcherHelper.java:232)
	at
com.arsdigita.cms.ContentSectionServlet.doService(ContentSectionServlet.java:136)
	at
com.arsdigita.web.BaseApplicationServlet$1.excurse(BaseApplicationServlet.java:111)
	at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:57)
	at
com.arsdigita.web.BaseApplicationServlet.doService(BaseApplicationServlet.java:105)
	at com.arsdigita.web.BaseServlet$1.excurse(BaseServlet.java:188)
	at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:57)
	at com.arsdigita.web.BaseServlet.internalService(BaseServlet.java:163)
	at com.arsdigita.web.BaseServlet.doGet(BaseServlet.java:273)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
	at
com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:222)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:103)
	at
com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:80)
	at com.arsdigita.web.BaseDispatcher.forward(BaseDispatcher.java:227)
	at com.arsdigita.web.BaseDispatcher.forward(BaseDispatcher.java:211)
	at com.arsdigita.web.BaseDispatcher.dispatch(BaseDispatcher.java:135)
	at
com.arsdigita.web.DispatcherServlet.doService(DispatcherServlet.java:123)
	at com.arsdigita.web.BaseServlet$1.excurse(BaseServlet.java:188)
	at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:57)
	at com.arsdigita.web.BaseServlet.internalService(BaseServlet.java:163)
	at com.arsdigita.web.BaseServlet.doGet(BaseServlet.java:273)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
	at
com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
	at
com.arsdigita.london.shortcuts.ShortcutFilter.doService(ShortcutFilter.java:79)
	at com.arsdigita.web.BaseFilter.doFilter(BaseFilter.java:116)
	at
com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:246)
	at
com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:163)
	at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
	at java.lang.Thread.run(Thread.java:513)


Expected results:
Two possibilies:

* Either don't have a delete link next to the primary language instance
* Or, make the german the primary instance

Additional info:

The languages tab needs to be updated so that there is some visual
distinction between the primary & secondary language instances - they
current display with identical styling.