PLFM-1698 Refactor names for admin operations
PLFM-1698 Implement manager for admin operations
PLFM-1698 Implement service for admin operations
PLFM-1698 Implement controller for admin operations
PLFM-1698 Implement the Java client for admin operations
Merge pull request #328 from eric-wu/develop

PLFM-1698 Add admin operations for trash can