Deleted obsolete class AbstractSender
Refactoring

connect-Method - no starting of work in constructor.

Getters for sender + receiver.
Refactoring and deleting unused files.
Service, Restructuring, Callback

Service implemented (new process)
Giant restructuring.
Callback mechanism for service results implemented.
Menu, Refactoring, Update on manifest

Menu items for every activity.
Refactoring.
Refactoring + Fixed lint problems
Adjusted layout. Added register link to login-activity.
Purging.
Renamed remote service
Temporarily disabled en-/decryption (buggy)
Several changes (+ architectural)

Reduced type safety due to functionality
Adjusted activities (login,register, list)
Replaced ping-connection with normal timeout
Little server update.
Added SQL-statements to setup database for PingYa

no user is created.
Server - comment XXX