Implement api tokens page

* Rewrite queries on API tokens page in SQLAlchemy, and placed those as static methods on the ApiToken model.
* Add logger to BaseLayout class, available to all views as self.log, go log away....
* Add missing SQLAlchemy logging to development.ini/production.ini files
* Add a few test users to initdb script that do not have superuser set
* Fix: remove TODO on index.jinja2 template about a <div> not being allowed in a <abbr> because it is a block-level element, a <span> worked fine here and did not affect the look of the memory graph.