#152 fix proposal: make find duplicates permanent

Fix issue #152 by making "Find duplicates" setting permanent.
Probably we should add some type of notification above Thumbs view.
Changing dir, including subfolders or refreshing unsets "Find
duplicates" option.
Merge pull request #154 from krzyc/duplicates-fix

#152 fix proposal: make find duplicates permanent
#152 fix update: add "find duplicate images" icon and titlebar text
#152 fix update: polish translation and ts files update
Merge pull request #155 from krzyc/duplicates-icon

#152 fix update: add "find duplicate images" icon and titlebar text
	Updated German translation
Merge pull request #161 from JHooverman/master

Updated German translation
Update French translation (for new change)

- by Geiger David <david.david@mageialinux-online.org>
Merge pull request #162 from david-geiger/master

Update French translation (for new change)
Update translation bins and version
Merge branch 'master' into sqlite-tagging