added 2 methods to reduce "code load" from MyMapActivity

ideally I'd like to have most of the fields private to limit access to
the class and also with helper methods hopefully reduce the amount of
code in more heavy parts
replaced distance finding with a method from Place

cleaned some unused imports eclipse was worried about, perhaps as I gain
more understanding I might be able to create some sort of AppUtils class
Merge branch 'master' of https://github.com/jimburton/BigArrow