* Clean up & comment base templates
* Clean up login template & form
* Use SVG file for NetBox logo
* Simplify breadcrumbs
* Merge changelog.html into home.html
* Rename title_container block to header
* Move breadcrumbs block to object.html
* Attach names to endblock template tags
* Reorganize root-level templates into base/ and inc/
* Remove obsolete reference to Bootstrap 3.4.1
Include the full path for the ?next= variable in login links if we are not on the logon page.
Additionally include next for post requests that have the next variable set (will only come from the login page itself generally)