Publish title attribute in the general request for list of layers

[fzadrazil]

It would be convenient to display title instead of name in the client apps like HSLayers as title contains original name of the layer in human readable form (including special characters). Right now the GET request for list of layers (/rest//layers) returns only names of layers. Adding title to the response JSON like this would solve it

[
  {
    "name": "uzivatelske_kresleni",
    "title": "Uživatelské kreslení",
    "url": "https://hub.lesprojekt.cz/rest/fzadrazil/layers/uzivatelske_kresleni",
    "uuid": "d50de2bd-8169-4ea5-836b-20a08ca486c5"
  }
]