Deletion of objects of custom app
Merge branch 'mongokit' of github.com:gnowledge/gstudio into mongokit
Merge pull request #349 from krishna31/mongokit

Implemented thumbnail for svg and pdf
Deletion implemented in custom apps
Merge branch 'mongokit' of github.com:gnowledge/gstudio into mongokit
Merge pull request #351 from krishna31/mongokit

update for existing pdf,svg files
Merge pull request #352 from Dhiru/mongokit

Deletion implement in custom apps
Merge pull request #353 from krishna31/mongokit

update for existing pdf.svg files
update for existing pdf.svg files