IntegrityChecker crashes with missing Portlet data.

blindly accepts an entity id as a string and assumes it on Long format.  If its not or "" empty string then BANG!

The customers data had empty string for a PortletConfiguration projectId.  

{code]
mysql> select * from propertyentry, propertystring where propertyentry.id = propertystring.id and property_key = 'projectId';
+-------+----------------------+-----------+--------------+--------------+-------+---------------+
| ID    | ENTITY_NAME          | ENTITY_ID | PROPERTY_KEY | propertytype | ID    | propertyvalue |
+-------+----------------------+-----------+--------------+--------------+-------+---------------+
| 11550 | PortletConfiguration |     10095 | projectid    |            5 | 11550 | 10061         | 
| 11552 | PortletConfiguration |     10096 | projectid    |            5 | 11552 | 10060         | 
| 11563 | PortletConfiguration |     10111 | projectid    |            5 | 11563 | 10061         | 
| 11565 | PortletConfiguration |     10112 | projectid    |            5 | 11565 | 10060         | 
| 11620 | PortletConfiguration |     10133 | projectId    |            5 | 11620 |               | 
| 11617 | PortletConfiguration |     10132 | projectid    |            5 | 11617 | 10070         | 
| 11863 | PortletConfiguration |     10246 | projectid    |            5 | 11863 | 10061         | 
| 11873 | PortletConfiguration |     10248 | projectid    |            5 | 11873 | 10060         | 
| 12019 | PortletConfiguration |     10301 | projectid    |            5 | 12019 | 10073         | 
| 12120 | PortletConfiguration |     10331 | projectid    |            5 | 12120 | 10060         | 
| 12448 | PortletConfiguration |     10429 | projectid    |            5 | 12448 | 10061         | 
| 12450 | PortletConfiguration |     10430 | projectid    |            5 | 12450 | 10060         | 
| 12703 | PortletConfiguration |     10512 | projectid    |            5 | 12703 | 10072         | 
+-------+----------------------+-----------+--------------+--------------+-------+---------------+
13 rows in set (0.01 sec)