minor UI changes
minor UI changes in switch workspace
integrated server side tree to ui
sample data generator
added more sample data
added sample data for nodes
added config module to manage application level configurations
minor changes
conversation tree related changes
minor ui changes
html cleanup
conversation related fixes
minor ui changes in the left panel
ui changes - modified left and top menu
changed workspace list to input type and display workspace on switch workspace.
minor changes
updated sreenshot
added node types and related changes
tree related changes
code refactoring...also added persistence for request headers