Remove prepopulated queries for https://outbreak.info/compare-lineages

[flaneuse]

Right now, on the page load, https://outbreak.info/compare-lineages loads the variants of concern to compare, which is a decently heavy query.

Goals:

To improve the page load, we want to remove the curated lineages as the default condition if there's no pango parameter and force the user to request individual lineages instead. There are also a couple of bugs to fix at the same time.

Individual tasks:

1. Stop a default pango parameter from being set on page load if it's empty
2. Change the expansion panel to "change lineages" be open on page load
3. Add buttons to add the current CURATED variants as variants

⬆️ these tasks have been completed (I think) on the compare-lineage-no-preload branch

Additional tasks:

4. Remove the sub parameter and the associated "include sublineages" checkbox option
5. Double check that refreshing a route loads the right parameters
6. In box 2 (WHO VOC/VOI sublineages), remove the "clear and add X lineages" button.
7. In boxes 2-5, don't trigger the route change/execution of the form, but just add the results to the selected lineages variable. The user will have to click "create report" to add them.
8. If there's other bugs/issues you see, please suggest changes!

[olekkorob]

You mean 1,2,3 tasks are already done?

[flaneuse]

Yep, should be!

[flaneuse]

closed in #608