Allow share links to remove collection and add to collection

Author: cjmyers

lib/app.js

@@ -334,6 +334,9 @@ function App () {
     actions.makePublic
   )
 
+  app.get('/user/:userId/:collectionId/:displayId/:version/:hash/share/removeCollection', requireUser, actions.removeCollection)
+  app.get('/user/:userId/:collectionId/:displayId/:version/:hash/share/addToCollection', requireUser, views.addToCollection)
+  app.post('/user/:userId/:collectionId/:displayId/:version/:hash/share/addToCollection', requireUser, views.addToCollection)
   app.get('/user/:userId/:collectionId/:displayId/:version/:hash/share/remove', requirePublicLogin, actions.remove)
   app.post('/user/:userId/:collectionId/:displayId/:version/:hash/share/removeMembership', requirePublicLogin, actions.removeMembership)
   app.get('/user/:userId/:collectionId/:displayId/:version/:hash/share/replace', requirePublicLogin, actions.replace)