added table and 3 functions

I created a service call table to keep up with the service calls. I will
link the table to our sold appliance, and customer tables. The
serviceCalls function adds info to the table. ViewService, selects
everything from the service calls table. I also added a column to the
appliance table, 'status' either available or sold. Status is updated in
sale ticket function.
pgRouting tables

I was finally able to create a route by executing the new lines of code.
I did all of the testing in pgadmin III. Next i will incorporate the SQL
into the program.
link to SQL
geocode addresses

My plan is to geocode customer addresses, do a nearest neighbor in
postGIS to select the nearest node in my network dataset, then i can
plug in the 2 nodes for the rout, do the shortest path selection to
create tables with rout data and tie the table to a customer.
changed starting node for pgrouting

changed starting node for pgrouting
Updated Print statements

I also finished sale ticket 2 by adding dates to the sales table.
Merge remote-tracking branch 'origin/feature' into feature

Conflicts:
	Database.py
Updated print statements, and saleTicket2
updated print statement
Merge pull request #7 from nwalk/feature

Feature