Convert amounts like '21,99' to '21.99' because the Big International Payment Company can't handle international amounts

Fixes #11
Fixes #30
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

Conflicts:
	spec/models/pay_pal_express_spec.rb
Revert "update rspec setup to support headless operation, primarily for CI automation"

This reverts commit af31c4821f3de5aedae187e0261fc2a74c39e3b6.
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
Tell people to restart their servers after the generator is run

Fixes #39
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
Remove attr_accessible call in PayPalExpress code
- 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
fix: gateway skipped sending shipping total etc

Fixes #45
Fixes #46
Only use additional tax adjustments
'tax_total' is now called 'additional_tax_total'