Queue download if update asked per ID

The version of the update function is chosen depending on the URI that is passed to the update method of the repo module:

• An ID URI: the ___worker_update_from_ids is selected, the user will be able to queue the different kara to download by calling again the update method with others ID URI
• Anything else: the ___worker_update is selected. It will download all the database from Kurisu, filtering if the passed URI is not URI_NULL.

The aim here is to offer a download process option which permit the user of doing a simple dry-update and then selecting the different karas he wants to download id per id.

Will close #102 (closed) for now.

Also close some TODOs.

src/module/module_repo.c

@@ -452,6 +452,8 @@ ___handle_got_json_internal_callback(const char *key, const char *val, int comp,
             const bool ok = database_update_add(kara->db, kara->filename, &kara->mdt, id, false);
             LOG_ERROR_IF(!ok, "REPO", "Could not add unavailable kara %ld to db", kara->id);
             LOG_INFO_IF(ok, "REPO", "Added unavailable kara %ld to the database", kara->id);
+            if (ok)
+                database_update_set_new(kara->db, (int)kara->id, kara->is_new);
         }
 
         /* The file changed */