Clean up soap CRM-12343

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* CRM-12343: Remove Soap code
  http://issues.civicrm.org/jira/browse/CRM-12343
Spiff up credit card icons CRM-12515

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* CRM-12515: Visual selection of "credit card type" on contribute/event forms
  http://issues.civicrm.org/jira/browse/CRM-12515
Merge pull request #982 from eileenmcnaughton/apitests

cleanup activity tests, examples, api
Merge pull request #981 from colemanw/creditCard

Spiff up credit card icons CRM-12515
Merge pull request #980 from colemanw/soap

Clean up soap CRM-12343
Merge pull request #983 from eileenmcnaughton/apitests

Apitests tidy ups
Fix cache flushing
use apisuccess & failure to clarify errors