Outgoing interface for mail bridge
Rename: sender -> from
** Added attachments, changed MimeType to official
javax.activation.MimeType
Got rid of old MimeType class. Use MailType for message types
(plaintext, html) and String for attachment content-types
** Added dummy mail bridge plugin
** Renamed dummy-mail-bridge plugin library
Renamed: sendMailSimple -> sendMail
- Fixed workspacePermissionResolver
- Added teacher test user to scripts
- Added UserGroup permission resolver
- Added message for group teachers about guidance request
Merge branch 'devel' of https://github.com/otavanopisto/muikku.git into devel
Merge remote-tracking branch 'origin/FTR-19-outgoing-mail' into devel
- Added mail sender to new guidance request
- Fixed couple of NPEs from wall with permissions
- Added dummy mailer plugin for development purposes