peview: added signature verification

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5571 21ef857c-d57f-4fe0-8362-d861dc6d29cd
use PWCHAR instead of PWSTR for strings that are not null-terminated

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5572 21ef857c-d57f-4fe0-8362-d861dc6d29cd
peview: don't use PH_VERIFY_PREVENT_NETWORK_ACCESS when viewing certificate

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5573 21ef857c-d57f-4fe0-8362-d861dc6d29cd
peview: fixed label widths

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5574 21ef857c-d57f-4fe0-8362-d861dc6d29cd
don't show signer name if not trusted

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@5575 21ef857c-d57f-4fe0-8362-d861dc6d29cd