Results "notes" field

This release adds a "notes" fields to "results" table rows for adding any miscellaneous context to a new result entry, which can immediately be viewed by all users.

• Additionally, description editing for tasks and methods now populates the existing text in the editing modal.
• Also, state-of-the-art charts render for as few as 3 data points, instead of 4.

(Since database schema has changed, as well as API schema, this motivates a semantic "major version" change to v0.2.)