remove broken note from note list

When .cson is broken and catch error in processing this file,  undefined is collected in notes.

remved broken note(s) from notes list.

browser/main/lib/dataApi/resolveStorageNotes.js

@@ -27,9 +27,12 @@ function resolveStorageNotes (storage) {
         data.storage = storage.key
         return data
       } catch (err) {
-        console.error(notePath)
+        console.error(`error on note path: ${notePath}, error: ${err}`)
       }
     })
+    .filter(function filterOnlyNoteObject (noteObj) {
+      return typeof noteObj === 'object'
+    })
 
   return Promise.resolve(notes)
 }