fix stringify problem when multiple headers values exist to be returned
Merge pull request #209 from bbraybrook/header_array_fix

Fix stringify problem when multiple headers values exist to be returned
CS fix after PR merge
Add missing Net_LDAP3_Result::get_dn() method
Overwrite Net_LDAP3's normalize_entry() method to behave as the old one
Merge branch 'master' of github.com:roundcube/roundcubemail
Remove folder column after disabling multifolder scope (#1490022)