Zoom or focus on specific task AOI

[smit1678]

When task AOIs are very small and geographically distant, the map view defaults to a zoom and center that shows both at the same time. This doesn't work well for small AOIs: http://hotosm.github.io/imagery-requests/#/requests/58975cade3970100117a94f1/tasks/58975d00e3970100117a94f2.

Could be handled in a couple ways:

• Set initial zoom and center of the map on the specific task AOI when loading the page
• Add a zoom to AOI button or another method for zooming in

[smit1678]

Example task: https://coordination.openaerialmap.org/#/requests/59771e3aeb38a400111f12c0/tasks/59772a69eb38a400111f12c9