callback function to check if a nom_objet is already taken
selecting data menu
working on view objet
rendering linked objet in view, small css
styles for helpboxes in related objet list
small fix in date insertion in database for relation table
solving minor conflict in accueil
solved a problem in dates with database and rendering by reworking dates_helper
small changes in date rendering
finished querying the sidebar linked items for view data
added links in related objet to see their details in view data
Merge branch 'paulyves' into development
ressource viewing, with image and sidebar
Merge branch 'paulyves' into development
minor changes in add image validation
added optional uploading of image instead of mandatory uploading
code for ajout_ressource cleaned
changed video form to enable optional upload instead of mandatory upload
rendering alternative link for image and video in view_ressource
small security rework for add_objet and add_relation