URL-encoding authentication token if we are using smartystreets.
Adding a custom field to flag if smartystreets is being using. Setting the flag to true as default.
Adding validation for id and token fields if smartystreets is being used.
Small fix for ADDR_Validator_TEST.
Implementing Edit/View modes for the address verification settings page.
Merge branch 'dev' of https://github.com/SalesforceFoundation/Cumulus into feature/521-addr-settings-2
Merge pull request #581 from SalesforceFoundation/feature/521-addr-settings-2

Feature/521 addr settings 2
Merge dev into feature/503-build-includes-install-scripts