Add simple project and task sync

The synchronization service now only accepts a list of time registrations.
However the clients that sync with the webservice can have projects and tasks 
that are not (yet) used in any time registration. So if we keep working this 
way those will not (yet) be synced.

So I want to add two field to the request to accept a list of projects and a 
list of tasks. The client itself can decide if he already checks for projects 
and tasks that are not linked to any time registration or if he just passes all 
projects and tasks.

On the backend (in the sync-service) we will also check all projects to see if 
there is already a time registration coupled to the project (so if we can 
ignore any of the incoming projects) and also for the task list. For the task 
list we check on task name and project name, for project we only check on 
project name.

Original issue reported on code.google.com by dirkvran...@gmail.com on 11 Jan 2013 at 1:49

chokkarg / worktime

Add simple project and task sync #177