CRM-15763 - Payment Express has deprecated SSLv3

Payment Express (DPS) no longer supports SSLv3 (3), so suggest this is adjusted to default (0) which will allow curl to auto-negotiate to use a compatible version of TLS
Merge pull request #4790 from mattrenner/CRM-15763

CRM-15763 - Payment Express has deprecated SSLv3
CRM-15766 - Fix settings form wrongly adding everything to config
Merge pull request #4805 from colemanw/CRM-15766

CRM-15766 - Fix settings form wrongly adding everything to config
Merge pull request #4806 from civicrm/4.5

Merge branch 4.5 into master