Mongokit

1) Making collection of files if uploaded files are more than one …
	changes done in file: /views/file.py
2) Prevesouly when we are uploading file there are 3 to 5 versions created for the same file without editing  file once
	used find_and_modified query instead of save
	it will saved creating another version of same file
	Now there will only one version if we upload any file