Moved service library to Utilites package.
Outlined basics for UserServer (Client).
Authentication service client.
Added model library to Utilities package.
Syntax error fix.
Reflecting the move of service files to Utilities package.
The serverToken field has been a pending change for some time.
Implemented calendar manipulation for contacts.
Merge branch 'master' of github.com:AdaHeads/DatabaseServers
Minor changes to the Utilities package.
Unix timestamp converter.
Syntax and copy-paste error.
Minor fixes/changes to protocol interface.
Minor bugfixes and additional error handling.
Added handlers and database layer for Reception Calendars.
Initial UserServer.
ESL is not need for UserServer. Removed dependency.
Added support for user's groups.
Merge branch 'master' into tp