Adds Application config dashboard_subdomains option
Merge pull request #599 from nicolasblanco/dashboard_subdomain_in_config

Adds Application config dashboard_subdomains option which allows admin to set which subdomains show the dashboard.
Map keys
Move hash util functions to HashUtils
Merge pull request #602 from sharetribe/map-keys

Map keys
Create Transactions
Move data from conversation to transaction
Rename conversation_id to transaction_id
Booking and payment belong to transaction
Factory specs passing
Specs passing
Structure
TEMP
TEMP
A lot has changed, a lot work to do
Fix one more test
Renaming etc.
Before moving testimonials
Lots of things
More stuff fixed