commiting intermadiate branches
adding the changes for comment edit
deleteing all unused files
fixed #384 : editing the comment
fixed #384 : editing the comment
fixed #384 : added notebook comment edit and delete functionality
fixed #384 : added the missing functions

missed to add the required function to rcloud base base code
fixed #384 : Changed index of element
added missing funcitons in rcloud.js
fixed #384 : changed the text index for comment element
Merge branch 'develop' into delete-edit-comment
make RCB
fixed #384 : corrections in previous implementation
commitin current changes
Merge branch 'develop' into delete-edit-comment
fixed #384 : added css class to handle hover event
fixed #384 : hidding the close button by default
fixed #384 : handling display in css
Merge branch 'develop' into delete-edit-comment
fixed #206

disabling history icon if there is none