cancelling boundary edit will also remove tap gesture recognizer
when editing boundary for a field, other field boundaries are visible but greyed; other field centers are different color and have no label
select on a field annotation will select its bounds
updated button icons
field annotation can be selected to delete the field
can redraw a field's boundary by clicking on field center
does not add annotations on each boundary click
Merge pull request #11 from mitrenegade/boundaryEdit

Boundary edit
added sidebar containerview and toggle animation
added inputWithTitle alert view option
added sidebar icons, modes and actions; added delete rules for farm->fields and area->boundary
add and delete boundary from sidebar menu
added ZSPinAnnotation for better colors for pins and boundaries

farm center is also greyed out; reloads map when start editing field doesn't reposition map
added isDraggingPin; changed field selection and editing
added repositioning of existing field, and its boundary
when an annotation is selected or deselected, the sidebar is updated
Merge pull request #12 from mitrenegade/sidebar

Sidebar
Added more items