removed unwanted script
implemented d3 tree partially for theme map
modified get_tree_hierarchy() method to simple use for bothe 'tree browser' & 'collapsible tree'
Merge branch 'work' of https://github.com/sunnychaudhari/gstudio into work
d3 tree implemented and mapped under 'collapsible tree' tab, also provided options for tree fold and unfold on hover on 'Tree Browser' tab on theme details page
unwanted code removed from template
Merge pull request #953 from sunnychaudhari/work

d3 tree implementation for theme map