Merge pull request #12 from gbastien/master

Make sure the 'libreoffice' folder is removed
Merge pull request #13 from gbastien/master

Take more formats into account
Merge pull request #20 from gbastien/master

Finished translations infra and added french translations
minor translation fixes
Merge pull request #23 from gbastien/master

 Added the possibility to enable/disable PDF indexation. See issue #21
french translation : use "visionneuse" for "document viewer" for
end-user messages
Merge pull request #26 from gbastien/master

Local settings consistency regarding global settings
Merge remote-tracking branch 'collective.documentviewer/master'

Conflicts:
	collective/documentviewer/locales/fr/LC_MESSAGES/collective.documentviewer.po
	collective/documentviewer/locales/fr/LC_MESSAGES/plone.po