Removed initialization of HTTPUrlConnection from constructor.

It was causing issues and was being overwritten later anyway.
Implemented calculation of distances (in feet/miles) from user and sorting based on it.

Details:
* This required adding a distance field to the FacilityItem class
* TODO: Add the distance to the ResultList Activity Item views
Fixed distance unit conversion issues. Added Distance to ResultList Activity items.

TODO: Fix resulting layout issues. Further testing.
Fixed ResultList Activity display of facility item distances.

Details:
* Changed it to display below the name since it was usually too wide on the right
* Changed it to only show 1 decimal
* Removed some debug statements
Merge pull request #48 from aelx311/david-#41

Implemented Sorting By and Displaying Facility Distances from User