The select is single when configuring roles for projects, which is not
matched with horizon
Change to multi-select when configuring roles for projects
Change-Id: I3ecee8431f107e723c0046c549a8e016a846f6a2
1. Fix edit metadata success hint
2. Fix manage image metadata success hint
3. Fix create/edit project modal top padding
4. Fix edit user modal top padding
5. Fix create user group modal top padding
6. Fix refresh list page in detail after finishing action in detail page
7. Remove useless fetch in base detail page
Change-Id: I80fe346cc0be4bdb8607088578fa2acb446cf084