Merge pull request #125 from danito/master

update fr translation
more translations
corrected encoding error

htmlentities() messes up foreign characters. we don't need it here.
Merge pull request #126 from danito/master

update FR translation
added soundcloud.class

* it can get own tracks and favs after oauth authorisation.
* de translation
* hybridauth provider from
https://github.com/benbowler/hybridauth-soundcloud
* added some changes to the hybridauth provider to make in work in a
wrapper
* tried to not display the article image with audio-articles
oops — soundcloud_access_token was not hidden

no need to show this, except for debugging
added yelp.class

* gets the last ten yelp reviews in full text. uses the yelp user RSS
feed and scrapes the full text from the website.
* also added a corresponding german translation
* still some todos, i.e prevent scraping all reviews with each sync.
saving and checking a "last seen ID" feature should prevent that.
no yelp scraping if review has already been scraped

* separated post_exists($id) into a function that can also be called
from mods
* made a change to image handling in case of short filenames (og:images
from yelp have a very short filename, which caused image mix-ups in the
wp media database)
update FR translation