AT-2.2: Automatically set current location as starting point

[tinaw1412]

This AT is for #7

Acceptance Criteria:

• Use current location” option is available.
• App correctly sets start location as current location.
• User can manually override the start location.

[maorethians]

If the user is inside a building, use current building, if they are outside, use current location

[maorethians]

Confirmed