Merge pull request #335 from kedar2a/mongokit

Editing and deleting of markers. Also functionality of attaching additional note for the marker added.
File widget Implemented in desinger
Merge pull request #337 from krishna31/mongokit

File widget Implemented in designer
bug resolved in uploading image via designer
Merge pull request #338 from krishna31/mongokit

bug resolved in uploading image via designer