Change title, legend & remove status unknown

[codarose]

What

• Changed the title from "Twin Cities Aid Map" to "Twin Cities Mutual Aid Map"
• Modified the title padding
• Hid the site 'counter' on mobile view
• Removed the location filtering option for 'unknown sites'
• Removed 'unknown sites' pins from the map

Why

https://github.com/Twin-Cities-Mutual-Aid/twin-cities-aid-distribution-locations/issues/189

Ensure the following interactions work as expected. Please test using a mobile form factor.

• [x] Tapping on a marker on the map displays information about the marker in a popup.
• [x] Tapping the "Show list of locations" button replaces the map view with a list view.
• [x] Tapping an item in the list replaces the list view with a map view, and navigates the map to the tapped item on the map.
• [x] Tapping one of the ✅'s in the legend filters items on the map and in the list.
• [x] Changing the language to spanish changes things on the page.
• [x] Clicking the Help/Info button opens and closes a menu with information.
• [x] Clicking the X Close button on the Help/Info screen closes the modal.

Check the app in the following web browsers:

• [x] Chrome
• [x] Firefox
• [ ] Edge
• [ ] Safari

[codarose]

This change will cause "Filter_spec.js" to fail - need to delete or update this test because it only references the 'unknown sites'

[jdalt]

@estherrose046 specs/functional/filter_spec.js ended not failing due to a little clause that short circuits the test when there are no unknown elements: https://github.com/Twin-Cities-Mutual-Aid/twin-cities-aid-distribution-locations/blob/f57ce57a8fc8e8afe531d81bb04a4b8e01275faa/specs/functional/filter_spec.js#L13-L15