cluster overlap point seeding (#297)

* Fixed install of new script

* more work on the overlap script

* In progress commit

* Now working

* Updates for new geometry handling in DB model

* Moved cluster overlaps into library

* Removed network stuff from place_points_in_overlap

* first pass at overlap test

* Fixed test and comments

* more updates for tests and comments

* Mocked out more

* In progress testing

* Finally test is working

* Updated tests and script

* fixed not passning dem in test

* Removed duplicate logic from serial place points