Merge pull request #109 from david-geiger/master

Update French translation and fix missing space on Mainwindow
Preview Dock implementation part 1
Merge branch 'master' of github.com:oferkv/phototonic
Updates for Russian translation
Updated German translation
Merge pull request #110 from JHooverman/master

Updated German translation
Update French translation (for new change)

- by Geiger David <david.david@mageialinux-online.org>