Fix for issue 0003047: Manually assigned developers cannot resolve in All Projects view

along with a few other related fixes

• bug_view_advanced_page.php:

• bug_view_page.php:
  change uses of access_has_project_level() to access_has_bug_level()

• core/html_api.php
  (html_button_bug_delete):
  (html_button_bug_monitor):
  (html_button_bug_close):
  (html_button_bug_reopen):
  (html_button_bug_resolve):
  (html_button_bug_assign):
  (html_button_bug_update):
  change uses of access_has_project_level() to access_has_bug_level()

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@2084 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9