Escape HTML and JS in wallposts and reactions.

BB-130 #resolve #comment This is now fixed and can be tested on the dev server.
Adding and removing vouchers from the order are mostly working.

There are still a few bugs though.
List the newly created Vouchers.
Create new files for vouchers not related to a paid Order.
Merge pull request #217 from onepercentclub/fix-html-injection-wallposts-bug

Escape HTML and JS in wallposts and reactions.
Sync ember-data-drf2-adapter with upstream.
Merge branch 'master' of github.com:onepercentclub/bluebottle
Fixes from review with @gannetson.
Merge pull request #218 from onepercentclub/voucher-re-voucher

Voucher re voucher
Merge branch 'master' into ember-multiple-transactions

Conflicts:
	static/global/js/app/orders.js
	static/global/js/app/projects.js