db.ping() must use the same application level query timing and reconnection logic as other query types - issue #1608

fix bug preventing proper handling of old style verification links by new style code, documented exhaustively in issue #1592.

zero-change cosmetic cleanup of code.  make exit points explicit, and use curly braces consistently.

* Removed the .interactionData namespace from storage.js, created our first model - shared/models/interaction_data.js
* Simplified how data is stored into interaction_data, created current and staged sub-namespaces
* Added stageCurrent and publishStaged functions.
* in shared/modules/interaction_data.js, simplified calls to model.
* Tried to make the xhr mock make more sense and provide facilities usable for peeking at last XHR request data.

issue #1597

issue #1592 update complete_email_addition to accept a password in the case that email verification was started on a previous version of the software that didn't collect a password in-dialog

issue #1592 - update complete_user_creation to accept a password in the case that email verification was started on a previous version of code.

update the http_forward module to allow global request timeouts to be set, use this to implement a 15s upper bound on requests for declaration of support in development.  This should fix unit tests

added conformance tests.

tests should now pass
updated to jwcrypto that has proper callback delay guarantees and removed unnecessary setTimeouts

Updated all calls to jwcrypto to use the more intuitive API. Fixed a front-end test that was failing due to true asynchronicity of jwcrypto.

Renaming kpi_backend_db_hostname and port to kpi_backend_db_url. Updated with KPIggybank endpoint, posting form data

wsapi code cleanup: always name the response 'res', never 'resp'.  also fixes several bugs in error handling code.  closes #1277

* user.js: Update verifyEmail and verifyUser to take a password.
* network.js: Update completeEmailRegistration and completeUserRegistration to take a password.
* Replace verify_email_address.js and add_email_address.js with a single verify_secondary_address.js to reduce duplication.
* Update the templates.
* Bring back verify_email_address and add_email_address templates, but remove the verify password field.
* To dom-jquery, add show, hide functions.

modify interaction_data api to always return a quick success, update hub.js to add an .all() function that subscribes to all published events, interaction_data module now adds all published events to event stream

implement frontend interaction_data mechanisms, still require tests, event_stream population, and reduced UA information parsing

require authentication on complete_* wsapis to reduce risk now that password is provided before email verification.  issue #290 and a pre-requisite for issue #1000