Obtaining data for regions and products
Configuration given at the beginning of the script
Contract_no moved under customer data - fixes #4; added period_from input - fixes #5
Save a new customer to database
List customers from database
Detail of a customer
Delete a customer in customer detail
Pass customer key to next page by session variable (can not use query string for offline html5 application)
Added editing of saved customer
Contract ID is not required value
Input text length limited
Merge pull request #8 from misa/master

Customer stored in indexedDB