UML update
Uml update and modularity for class diagrams
Adds some comments to the main activity
Fix indent
Remove dummy getItemId function, use inherited one

Since we add the “All projects” line to the project spinner, the
inherited function will not work as intented but since we don't use this
function we can juste leave it this way.
Add a menu entry to clear deleted Tasks from cache
Fix multiple TaskListFragment bug
Display a toast when the date is cleared
Update project list when a task's project is modified
uml sync
Update README.md
retrieved master