update readme for release v0.8
updated spanish translations
albums: Added a check to save_to_disk property before adding entry

Doing this prevents that a "trancient" entry gets added to an Album.
This kind of entries usually come from external devices, which generally
generates duplicates on the album track list. (issue #169)
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latest polish translation
remove less than 50 percent translated translations
Merge branch 'release-0.8' of https://github.com/fossfreedom/coverart-browser into release-0.8
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latest polish translation
necessary changes to allow plugin to work in global install location
adjust help hyperlink to release-0.8
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Update README.md
latest translations from launchpad
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add new ast translation
Update README.md
Update README.md
latest polish translation
latest az translation