A few new strings
lua : fix a bug in documentation generation
lua : add documentation for j2k and webp
Merge remote-tracking branch 'upstream/master'
lighttable sort order: use filename as secondary and version as tertiary key
Updated Danish translation
Raise signals in more cases to update count

The lua part is untested but should be ok (according to boucman).
Drop the mipmap cache when a new db is created

This should make sure that no old thumbnails are used when the db is
removed but the old cache stays around.
Merge pull request #335 from pryds/master

Updated Danish translation
focus: replace wrong boxes with rounded quads.

better reflect the axes and how they get distorted through the pipe. not sure about the rounded corners yet.
Merge remote-tracking branch 'origin/master' into full-res-preview
focus: some visualization changes. not final yet.