1)Handled the nullcheck while parsing the serviceinstances in topology response

2)Corrected the menu items(IPAM,Flow series) which alerted during the RBAC changes
Merge pull request #48 from vishnuvv/BugFixes

1)Handled the nullcheck while parsing the serviceinstances in topology r...
Fixed...
Policy create window's source and destination port was showing as portx - portx.
Merge pull request #49 from balamurugang/bugFix

Fixed...
Tenant monitor network directory structure changes
Created UI directory in each feature which consists of  js, views as subdirectories inturn contains the js/view files for that particular feature