implemented DenyFile action

git-svn-id: svn://localhost/project_picapica/trunk@307 fb96df88-216d-11de-830c-f3023f12d8ac
bugfix - nested layout should not have parent passed in constructor

git-svn-id: svn://localhost/project_picapica/trunk@308 fb96df88-216d-11de-830c-f3023f12d8ac
rich text with html formatting in About messagebox

git-svn-id: svn://localhost/project_picapica/trunk@309 fb96df88-216d-11de-830c-f3023f12d8ac