This PR Solves #6830
## Issue Summary
The tasks are grouped by their respective statuses and displayed on the
ui. The grouping is performed by `lodash.groupBy` which doesn't maintain
explicit ordering of the keys.
## Fix
Sort the tasks groups array by their status on the basis of
reverse-alphabetical order before generating task component for each
task data.
#### Why reverse alphabetical?
It implicitly sorts the statuses as per the order `TODO` ->
`IN_PROGRESS` -> `DONE`
Caveats:
1. Changing the name of one or more status might result in a different
unwanted order.
2. `null` is unhandled, although the original code doesn't allow for
nulls as status while displaying
### Alternative Fix
Maintain an explicit ordering of the statuses and sort the tasks
accordingly.
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Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>
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