Docassemble

Fixed
- Additional fix to allow the use of `table prefix` in `db`.

Changed
- The `include_internal` option of `store_variables_snapshot()`,
`variables_as_json()`, and `all_variables()` now controls whether
the `nav` variable is included in the output.
- The `authorized registration domains` Configuration directive now
applies to social login methods as well as username/password login.
- Increased accessibility of the `datatype: combobox` interface.
Fixed
- Problem with the exim4 mail configuration.
- Problem when `table prefix` in `db` was used.

Added
- The `mms attachments` option in the `twilio` configuration.

Fixed
- Issues with SMS interface.

Added
- The `signature pen thickness scaling factor` Configuration
directive.
Changed
- Upgraded Mako to version 1.2.2.
- The field modifiers `address autocomplete`, `label above field`, and
`floating label` can now refer to Python expressions.
- Upgraded Google OAuth.
Fixed
- Issue with exim4's overinclusive `dc_other_hostnames` setting.
- Error with images in Markdown to DOCX conversion.
- Error with `overlay_pdf()`.
- Error with `temporary session` when user is not logged in.

Added
- The `voices` option of the `voicerss` Configuration.
- The `voice` keyword parameter of the `set_language()` function.
- The `auto login` Configuration directive.
- The `output_to` keyword parameter of the `.convert_to()` method of `DAFile`.
- The `output_to` keyword parameter of the `.export()` method of
`DALazyTableTemplate`.
- The `output_to` keyword parameter of `pdf_concatenate()`,
`docx_concatenate()`, `zip_file()`, `overlay_pdf()`.
- The `extract_pages()` method of `DAFile`.
Changed
- If an attempt is made to access the contents of a `DAFile` that is
not yet initialized, the `.initialized` attribute will be
sought. The `.initialize()` method sets `.initialized` to
`True`. Thus, if you have a `code` block that calls `.initialize()`
on a `DAFile` called `myfile`, you can attach `sets:
myfile.initialized` to the `code` block and it will be called upon
if the interview logic requires the contents of `myfile`.
- When an `attachment` that has a `name` creates a `DAFileCollection`
object, the `DAFile` attributes will have their `alt_text` set to
the `name` followed by the file type in parentheses.
Fixed
- Adjusted the `Dockerfile` so that the server can start up even if
the internet is not available.