Clean up the menu and header a little bit

• core/html_api.php
  (print_header): use string_display() on the title
  (print_hr): flip the code in the conditional
  (print_menu): rearrange the menu so account prefs are next to login/logout
  and conditional admin stuff is at the end

• core/print_api.php
  (print_project_option_list): use string_display() on the project names

• lang/strings_english.txt
  (account_link): use 'My Account' instead of 'Account'

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1818 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9