Fixes :
- VR router offering link leads to an empty page
- In the event listview, clicking the username redirects to the event not the user
- While changing a systemvm service offering, need to fetch system offerings by passing issystem=true, virtualmachineid and systemvmtype to the listServiceOfferings api
- When editing a role, resource admin is not in the dropdown
- In DeployVM, disk offering search doesn't show 'No records' if none present but keeps the old rows
- In add ACL Rule, the Rule# field should be a number, not text
- No pagination for security groups ingress / egress rules

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>