Add option to select email recipient in the contact form
Fix docstring
Move flash messages and contact bookkeeping to a better place
Use the id of contact_N_email for indicating the email recipient
Fix message sending arguments
Avoid server error in the data request form for non-existing datasets
Tiny code cleanup for consistency
Reorganize email sending code for contact forms
Allow the user to select email recipient on the dataset page
Merge branch master into 645-email-recipient-selector
Update translation
Add some space between elements in contact forms
Refactor to unify more of the code paths for different message types
Add more space to email templates