remove mapbox gem
changed gemfile for heroku
Revert "remove mapbox gem"

This reverts commit ab9fc1f33c3c43bffd46bfbc7f4ee57745a1bcaf.
Revert "changed gemfile for heroku"

This reverts commit 1193a21228af604e9e1fef6702bfbea7d81413bb.
add min of 1 to count number_field
added links in templates