Merge branch 'hotfix/sastry-python-quickfix'
This Fixes #719 : Changed style for file upload div
This Fixes #900
This Fixes #900

Missed this function while merging
This Fixes #900

Added dependency for sendmailR package
This Fixes #900
This Fixes #1115 : Trimmed all whitespaces present in text box for notebook id
This Fixes #1113 : Appended the asset name to be deleted in confirmation box
This Fixes #1118

added margin at bottom
merge 06629b5 from develop
Merge branch 'pr/1117' into develop
This Fixes #900

Added entry for sendmailR package in imports.
This Fixes #900 : Formatting correction for spaces
This Fixes #900 : Defaulted the comment notification subscription to false.
Merge pull request #1121 from sujitbehera27/srch-result-overlap_1118

Fixed issue #1118 - "search results overlap results header"
This Fixes #900: added space.
This Fixes #900: Again fixing merge issue
This Fixes #1113 : Change in function to retrieve asset name
This Fixes #1083

Saving notebook forcefully before fork.
This Fixes #1115 : Trim notebook id as well as version