various small refactorings
remove simplecov since we now have coverage reporting on Code Climate
re-add simplecov by request
fix calendar_test

todos in rest of month means all todos after next week in the current month. The test failed
if the todo was created in next week and that week being the last week in the month. In that
case the todo should not be returned by rest_of_month since it is in rest_of_week
move coverage to ci rake task
avoid name clash
add tests for done_todos
refactor search controller
add missing tests for todo
Merge branch 'master' into new-gui