marker colours and field of view bounds
merging mapactivity with marker colours & labels, FOV set to include everyone at initialization
Merge branch 'gui' of https://github.com/ringosake/cos333app into gui
view all button to zoom to include all group member locations
view all button to zoom to include all group member locations
merging mapactivity (markers with colours & labels; view button & viewing all group members) Merge branch 'gui' of https://github.com/ringosake/cos333app into gui