Updated accessor file
First schema for properties
Added first schema for areas with composite primary key and foreign key to properties
Added first schema for buildings
Added first schema for sales and zones
Replaced composite primary keys with unique constraints, primary keys will be assigned integers
Merge branch 'master' of https://github.com/hack4reno2013/housemind into front
Merge branch 'front' of https://github.com/hack4reno2013/housemind into front
Changed view
fixed merge issue with index