Fix CAS implementation (again)
Strings in ShowArticleActivity
Only download images if needed
Switch vente libre et mode produit
Strings again
Cache the list of articles for user info screen
More strings
Add badge for quantity
Different string for loginapp
Button to empty the basket
Update string
Skip confirmation activity
Remove ugly buttons
Strings again
Better error message (from exception)
Merge pull request #23 from apuyou/tweaks

Tweaks, mostly on GUI