gui/elm/Folder: Show big red cross on error
gui/elm/Folder: Show big red cross on error

nono/cozy-desktop,nono/cozy-desktop,nono/cozy-desktop,nono/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop