Fix 0003723: No ability to edit or even delete news is associated project was deleted.

M core/news_api.php

• (news_delete_all): Delete all news associated with a project.

M core/projects_api.php

• (project_delete): Call news_delete_all to delete news associated with a project.

M news_delete.php

• Delete news with checking project access level if project no longer exists. This is to allow deleting the news entries which should have been deleted when their corresponding projects were deleted.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@2496 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9