Correct a bug in the icon of the items
Changed the "change" button
Hide the popover when showing the summary box
Changed the color of twitter tags
Corrected a bug in the color of the tags
Changed the first layout, now it's card layout
Added an update button in the summary popover
Replaced the share icon
Correct a bug in the card layout
Put the share bar in a group bar

Now, the buttons won't split
Truncate the text to 300 caracters
Removed the showTag/hideTag buttons
Merge pull request #41 from tcomte/master

Improved the items page + the summary box