Added PostRun and PostRunError delegates
Adding modified Date helperfunction

Useful helper referenced from Brians post on forum: http://www.getsymphony.com/discuss/thread/102452/#position-10
Merge branch 'integration' of git://github.com/symphonists/xmlimporter into integration
Merge pull request #25 from andrewminton/integration

XMLImporterImportPostRun and XMLImporterImportPostRunErrors delegates added
Fix incorrect reporting of entries as invalid when they are actually valid
Clean up commit function

- follow the Symphony convention that newly created entries have the creation and the modification date set to the same value
- fire a distinct delegate when skipping entries
- general clean-up of the logic of the commit function
Fix variable naming
Revert "Adding modified Date helperfunction"

This reverts commit ef07703e6e3b967171bbcbf8cb94096df1d40901.
Fix delegate name
Update meta information
Handle {} as a URL. Add XPath errors inline
Merge remote-tracking branch 'origin/integration' into datasources

Conflicts:
	content/content.importers.php
	extension.meta.xml
	lib/class.xmlimporter.php