OpenBMC GUI Navigation Update

[Derick]

We discussed an update to the primary navigation and are planning to
make that change with the release of 3 upcoming features, LDAP,
Certificate Upload and Generate Certificate. There is a review pending
for Certificate Upload and LDAP and Generate Certificate stories are
being worked on currently. Once these features are completed, we plan
to make the following changes:

Current Navigation Structure
- Users
  - Manage User Account

New Navigation Structure
- Access Control
  - Certificate Management
  - LDAP User Management
  - Local User Management