Rename Spree::InventoryUnit.backorder to backordered
We only care about shipped units in Spree::LineItem#quantity_no_less_than_shipped
Add lambda to scopes, see reasons at https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/4960
Optimize Spree::LineItem#quantity_no_less_than_shipped
Lock all adjustments (not just mandatory ones) on checkout completion
Show currently selected currency in general_settings/edit
Remove ruby-debug and ruby-debug19 mentions from common_spree_dependencies
Add :currency_symbol_position config setting

This will address the issue brought up #1911, where the currency symbol was incorrectly being placed before the amount
Allow for currency_symbol_position to be customized in admin settings
Check for existence of variant_images in _thumbnails partial
Target correct form class name in checkout.js

Fixes #1905
Freeze to kaminari 0.13.0 until amatsuda/kaminari#280 is fixed
Fix postgres orphaned preferences SQL

Quoting fields/reserved keywords with backticks is only allowed in MySQL,
while single quotes are supported by both databases.

Fixes #1904
add percent per item calculator to promotions

Fixes #1604
Upcase SQL syntax
move authorization_helpers to testing_support so other extensions can stub the authorization. added the authorization_helpers by default to the generated spec_helper for extensions.

Fixes #1902
awesome_nested_set is an optimised replacement for acts_as_nested_set. Upgrading to awesome_nested_set is backwards compatible and it allows refinery (which uses awesome_nested_set) to be mounted alongside spree

Fixes #1927
corrected a typo in accurate_title method that was introduced in commit cb19a45209

Fixes #1928
Allow manually calling save_permalink with a value to recalculate

Fixes #1920
Remove disclaimer for master branch from 1-2-stable's README