Merge pull request #243 from oliverds/master

UI - usage of switch instead of true false #719
emails seotitles
widgets render
stripe to common
payments stripeko, paymill, bitpay to common
common paymenthods
stripe commented unused code
paymill certificate
typo
closes open-classifieds/openclassifieds2#819
authorize.net last fixes and closes open-classifieds/openclassifieds2#810
closes open-classifieds/openclassifieds2#811
closes open-classifieds/openclassifieds2#811
closes open-classifieds/openclassifieds2#823
closes open-classifieds/openclassifieds2#818
Merge pull request #244 from oliverds/master

UI ON/OFF switch