View changes (textfields to textareas, enum fixes)

Delivers #46217967, #43820677, #49079625

* Use textareas for `title` properties (acccesions; archival objects;
  digital objects; digital object components; resources)
* Use textareas for `date.expression`, `extent.container_summary`,
  `extent.physical_details`, and `extent.dimensions`
* Make `file_versions` template use `file_versions_file_format_name`
  enum instead of text field (see #46673841)
* Make `digital_objects.level` allow null values
* Translation edits: `digital_object.level`, `date.certainty_tooltip`,
  `date.era_tooltip`
Update Selenium test workaround for textarea changes
Fix textarea xpaths for Selenium tests
Merge branch 'master' into form-enum-and-textarea-tweaks
Merge pull request #413 from anarchivist/form-enum-and-textarea-tweaks

View changes (textfields to textareas, enum fixes)