Fixed install generator when scss is used

Fixes #33
Bump to latest paypal-sdk-merchant

Conflicts:
	spree_paypal_express.gemspec
update rspec setup to support headless operation, primarily for CI automation
Revert "update rspec setup to support headless operation, primarily for CI automation"

This reverts commit 2d3e09109b4eafef88332141b1dece4f7fe22f2f.
update rspec setup to support headless operation, primarily for CI automation

Fixes #31
Bump to 1.106.1

Conflicts:
	spree_paypal_express.gemspec
Append to store/all.css and admin/all.css rather than application
check correctly for frontend+backend css files
Update PayPal credentials because previous account was made inactive

Thanks PayPal, you swine.
Ability to set logo and solutiontype for checkout

Fixes #40
- send sku alongside name to paypal - send line items on purchase step (last step) to paypal, so it shows up in the paypal backend and in emails

Fixes #36
Fixes #43
Added ecommerce flash

Fixes #41
Add utm_nooverride as per this spree user thread:

https://groups.google.com/forum/#!topic/spree-user/uScFGdiX_DE
Add landing page prerence, fix header image preference + documented currently supported preferences
Add preferred_landing_page to list of accessible attributes
fix: gateway skipped sending shipping total etc

Fixes #45
Fixes #46
Use GET route for paypal_express_url to fix random CSRF issues reported by @dpritchett & co
Fix pay_pal_express_spec model by stubbing more of the right things
Customer confirms the payment inside paypal.

according to the [paypal doc page](https://developer.paypal.com/webapps/developer/docs/classic/express-checkout/integration-guide/ECCustomizing/)
" If you collect no additional information after buyers return from PayPal, you can skip the confirm-order page on your website. " , which is the case for spree. so they can finish the payment
in paypal, cuz we already gathered all the required information.

Fixes #34
Fixes #49
raise ActiveRecord::NotFound when current_order not available in controller

It may not be available when someone manually navigates to /paypal or /paypal/confirm without having a current_order

Fixes #55

Conflicts:
	app/controllers/spree/paypal_controller.rb