Docassemble

Fixed
- Styling of Font Awesome icons inside buttons.
- Some variables in Variables, etc. inappropriately flagged as undefined.

Added
- The `confirm registration` Configuration directive.
Changed
- CSRF errors pop up in a "flash" box.
- Cron jobs run with nice 19 (system upgrade required for this
change).
- Messages from Flask-User are now translated through the
**docassemble** system phrase translation system.
Fixed
- Styling of Font Awesome icons inside buttons.

Added
- The `hook_on_remove()` method.
- The `SQLObjectList`, `SQLRelationshipList`,
`StandardRelationshipList`, and `SQLObjectRelationship` classes in
`docassemble.base.sql`.
- The `.any()`, `all()`, and `.filter()` class methods of `SQLObject`.
- The `.has_child()`, `.add_child()`, `.get_child()`, `.del_child()`,
`.has_parent()`, `.add_parent()`, `.get_parent()`, and `.del_parent()`
methods of `SQLObject`.
- The `_session` attribute of `SQLObject`.
- The option to opt out of module pre-loading by adding ` do not
pre-load` to a line at the top of the module file.
Changed
- The `message` parameter of `.add_action()` has been renamed to
`label` (backwards-compatibility is maintained).
- The `.get_session()` method of `SQLObject` has been removed in favor
of the `._session` attribute.

Fixed
- Bug in package update script.

Changed
- The `pt-words.yml` file has been renamed to `pt-br-words.yml`. If
you are using this file, you will need to change your `words`
configuration.
Fixed
- HTML codes non-printable in dropdown lists.

Added
- The `inline_markdown` Jinja2 filter.
Fixed
- Problem with XLSX translation file colorization.