Added arguments for functions for display in the environment viewer
session on_reset event

cherry-picked from feature-compute-separation to avoid possible
future merge hell
even up empty panel sizes

by fixing the padding of dataframe viewer
fixes #1079
copy full_name attribute when duplicating notebook tree entries

fixes #1053
closes #1097

@agrawal-mohit, thanks, your investigation pointed out the root cause of the bug
i think it's better to make sure the attribute is populated rather than using
another attribute, however.  because sometimes the short name is not descriptive
and we need the full path (from full_name)
defunct comment
Merge branch 'pr/1043' into develop