Fixed 0003641: 'Date submited' in reports is always '12-31-69'.

core/filters_api.php

• (filter_get_bug_rows): last updated date was converted to unixtimestamp, but not date submitted.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@2471 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9