disable manage own hiring team checkbox when hiring team is involved in another teams billing

cmsWebApp/src/performa/orm/HiringTeam.java

@@ -159,7 +159,7 @@ public class HiringTeam extends BaseHiringTeam
     @Override
     public FieldWriteability getWriteability_ManageOwnBilling() 
     {
-        if(!getManageOwnBilling())
+        if(!getManageOwnBilling() || (getManageOwnBilling() && getBillingTeamsCount() > 0))
         {
             return FieldWriteability.NOT_IN_GUI;
         }

cmsWebApp/webroot/extensions/adminportal/my_company.jsp

@@ -107,8 +107,21 @@
                                     <%
                                         if(company.getHiringTeamsCount() > 1)
                                         {
+                                            if(!hiringTeam.getManageOwnBilling())
+                                            {
+                                    %>         
+                                                <div class="warning-box">
+                                                    Billing has been disabled for this team as it is included in <%= hiringTeam.getBilledByTeam()%>.
+                                                </div>
+                                    <%
+                                            }
+                                            else
+                                            {
+                                    %>          
+                                                <div class="form-brack-line-sub"></div>
+                                    <%
+                                            }
                                     %>                
-                                            <div class="form-brack-line-sub"></div>
                                             <div class="form-group row">
                                                 <div class="col-md-6">
                                                     <label><oneit:label GUIName="Will this team manage its own billing?" /></label>