last_error is not included in PolicyFeed/UrlError stats

[emilis]

Notifications show last_error only in the message, not in stats tables.

E.g.:

PolicyFeed/UrlErrors report

URLs total:
+--------------------------------
| count | parser | url
+--------------------------------
| 1 | president.lt-pranesimai | http://www.president.lt/lt/rss/rss.rss
+--------------------------------

Code total:
+--------------------------------
| count | fline
+--------------------------------
| 1 | unknown:0
+--------------------------------

Last url:

[{url:"http://www.lrs.lt/pls/inter/dokpaieska.showdoc_l?p_id=379358", parser:"lrs.lt-teises-aktai", method:"parsePage", original_id:"/originals/2010/08/11/21084", domain:"www.lrs.lt"}, (new Error("PolicyFeed/Crawler.saveOriginal: Unsupported page type.", "/originals/2010/08/11/21084 | http://www.lrs.lt/pls/inter/dokpaieska.showdoc_l?p_id=379358", 265))]