Course view for sending notifications
Send course announcement to all course users. Opt-out not yet included
Rename course notification to announcement. Update subject and display on announcement page
Default language to English if it is not specified in the URL
Merge pull request #211 from dirkcuys/master

Course announcements and language updates
Update locale files
Changing the image requirements to use separate _ for each part, for easier localization.
Updated Swedish language

Latest translation also with some uncommented strings.
Merge pull request #214 from Inkbug/fileTypeFix

Changing the school editing pages for easier localization.
Merge pull request #216 from interaktiv/master

Swedish translation
Swedish update

Minimal update
Merge pull request #217 from interaktiv/master

Swedish translation
changed project list thumbnails tuncate