browser_side: changes about the UI (remarks from Franck): - select "Register" by default instead of "Login" - make the "Register" and "Login" button more visible - do not use the "New message" button, directly display an empty entry - "New message" button would be bigger (if we use it again) - remove the background from the microblog entry header - "toggle syntax" button is displayed below the text area and with plain text (no icon) - icons for entry action are displayed in this order: "reply", "edit", "delete" - icon for replying is bigger than the others - used a "smiley" from tango as default avatar