Enh 0003688: Add threshold for changing the bug/bugnote view status.

M config_defaults_inc.php

• New Config: set_view_status_threshold (default REPORTER) - threshold needed to set the view status while reporting a bug / bugnote.
• New Config: change_view_status_threshold (default UPDATER) - threshold needed to update the view status while updating a bug / bugnote.

M bug_report_advanced_page.php
M bug_report_page.php
M bug_update_advanced_page.php
M bug_update_page.php
M bugnote_add_inc.php
M bugnote_view_inc.php

• Implemented the use of the thresholds added above.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@2457 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9