Add pull to refresh

[amaxama]

What

Add pull to refresh functionality for mobile and remove the refresh button. Since all web browsers have a visible refresh button built in, it's not required to include is as an explicit button on the page. Also, pull-to-refresh is a fairly intuitive action on mobile devices so should be pretty natural fo most users.

Why

Opens up screen real estate

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
• [ ] Firefox
• [ ] Edge
• [ ] Safari

[amaxama]

Video is a little laggy but the general idea is there...

[amaxama]

Visual of screen realestate with the refresh button:

WIthout the refresh button: