First go at k-means...
 On branch master
	modified:   ckanext-mobileminer/ckanext/mobileminer/commands.py
	modified:   ckanext-mobileminer/ckanext/mobileminer/db.py
	new file:   ckanext-mobileminer/ckanext/mobileminer/st_cluster.py
	modified:   ckanext-mobileminer/ckanext/mobileminer/tasks.py
	modified:   mobileminer.ini