add se_author attribute (refs #3996)
init new se_author attribute (refs #3996)
correct error message (refs #3996)
only se_author and admins can delete/edit its searches (refs #3996)
correct check profil case insensitive (refs #3996)
Merge pull request #854 from Eric-Brison/3.2-A3996

add se_author attribute in SEARCH family (closes #3996)