1. Add administrator link in header in user center page
2. Refactor overview component in user center
3. Refactor HeaderRightContent component
4. Add isUserCenterPage prop in containers
Change-Id: I03357e70d4fbe860740c3663f35aef63457835bb
1. Add client module to request openstack api
2. Remove window.request, stores use client to request api
3. Remove window.globals, use globalRootStore to deal with user info
Change-Id: I5657cfd8cf142dbacce8716991f805bbbb4a9222