remove code around connection testing from frontend database create/update now that it is being handled in the api.

* remove the /api/database/validate endpoint
* introduce connection checking as part of the database api create/update endpoints directly
* modify the return of the Database model in the api so that if a password was provided we swap it out for a known value and prevent leaking of the real password via the api.

Minor formatting cleanup 

mongo relative dates

fix issue where database create/update was still trying to call the d…

fix issue where database create/update was still trying to call the db_form_input endpoint which we removed recently.

Fix skinny time series bar charts

make sure QP "annotate" returns the correct version of a field (fixes #1257)

Admin email setting

change the way the password reset unit test is done to avoid issues with the way mysql handles datetimes.

migrate existing installations and automatically set the `:admin-email` if it hasn't been set before.

updated shrinkwrap file

change the way the password reset unit test is done to avoid issues with the way mysql handles datetimes.

Need cond-as-> macro 

set a length on our varchar to keep mysql happy.