Admin Panel

[timiimit]

Backend implements AdminPanelController which already allows some of these operations. Final admin panel should allow the following operations (ordered by importance):

• [x] Edit Account.Flags of other users
• [x] Add/edit/remove entries with ClientService
• [x] Add/edit/remove entries with TrustedGameServerService
• [x] Change password of any user (temporary until actual password reset feature is implemented)
• [ ] View flagged stats
• [ ] Delete or unflag flagged stats
• [x] Ability to edit cloudstorage system files
• [ ] Deletion of all sessions related to specific account
• [x] Deletion of account and all asociated information in db
• [ ] Temporary suspension of account

[Saibamen]

Related: #122