Apply review org user management

Modifications:

• Search user and Search tag inputs should be the same height
• Maybe a bit more space between inputs and the table
• "Search Users" and "Search tags" should be replaced by "Filter by name/username/email" and "Filter by tag"
• The first filter input should work for email address
• We need a way to go back to the list from the detail page
• Username is not display on user detail page
• Add link the user's Okta account like it's done in backoffice
• Add loading display on user detail page
• Add loading display on list users page
• When updating a tag, the dialog over dialog feels weird, maybe we can find a better solution
• Manage tag input placeholder should be "Search/Create Tags" 
• When I type "d", it does not propose the tag "d" but only "dd", whether "d" already exists or not
• If I hit enter, it will add "d" as a new tag, whether it's already in the list or not (the tag seems to be created only once on the server though)
• Pressing the ESC key does not close the tag suggestion but cancel the whole Edit popup
• No scrolling on the manage tags popup
• Column "Name" should be "User Name" or "User ID"
• Column "FullName" should "Full Name"
• Tag name should only contains alphanumeric characters and '_' and '-'