adjustments for @camilleghirne new design
wording and adjustments
fixed links are followed during edition
fixed drop-candidate class displayed
fixed border propagates when selecting another element
no more alpha for borders
fixed layout of the border check boxes with camcrock new design
updated unifile
little adjustments on sessions, dragging, design
fixed drag with prevent default
fixed resize
fixed drop in invisible containers of other pages
refresh dialogs when a file is opened
fixed text editor close button and style