allow foodcoops to add custom css

Conflicts:
	app/helpers/application_helper.rb
try workaround for failing test

(closes foodcoops#303)
allow to set page break options for each document
show articles ordered by members but not by foodcoop dimmed in receive
Bumped new version: 3.3.5-adam
remove html escaping from all text mails

Conflicts:
	app/views/mailer/invite.text.haml