show AR errors on disabled sending buttons
convert pdf attachments (in email) to utf8

without force_encoding write halts with: "\xFE" from ASCII-8BIT
to UTF-8
New actions "Create and send" and "Edit and send"
use first item as default item
link public companyes from invoices new_client form too
redirect to invoice list when coming from edit
adds required local context
adds required local context
redirect to correct invoice with new client when creating client on edit_invoice, closes #4113
hook to allow to replace recipient mails
fix, model_invoice_replace_recipient_emails returns an empty array, not nil
Merge branch 'master' of github.com:descala/haltr

Conflicts:
	config/locales/da.yml
	config/locales/fr.yml
	config/locales/sv.yml