Task list improvements

[mwarman]

Describe the story

Provide a clear description of the new feature or improvement to existing functionality.

Refactor and improve the task list page to:

• Improve the task complete toggle to align with the toggle on the form
• Consolidate the list to a single list which is searchable and uses toggles for specific filters like "completed"
• By default, hide tasks which are completed
• Relocate the task chart to a "task reports" page (work defined in another story)

Acceptance criteria

Provide clear acceptance criteria to validate the story is complete.

Gherkin syntax example:

GIVEN the 'PERSONA' has 'DONE SOMETHING'
WHEN the 'PERSONA' does 'ONE THING'
THEN the 'PERSONA' must do 'THIS THING'
AND the 'PERSONA' must do 'ANOTHER THING'
BUT the 'PERSONA' must not do 'UNWANTED THING'

Additional context

Add any other context about the story here.