Use modelFor('currentOrder') to get voucher list.
Move DonationPreview to projects.js.
Small Ember model cleanups.
Remove donations from voucher orders and remove vouchers from donations.

BB-648
Catch exceptions from DocData when generating payment url.
Small cleanup of DonationSerializer.
Merge pull request #446 from benkonrath/order-voucher-payment-cleanup

Order voucher payment cleanup
CSS Changes
Project Detail Changes
Added flaticons, edited project detail
Rebase CSS
Project Detail Improvements
Fixed merge error Project Create
Merge pull request #450 from FransTwisk/front-end-design

Front end design
Refactorings and small homepage fixes