Implement a basic way to see the project for a task in the workday
Summary:
Currently shown as a tooltip, the main purpose was to implement the
backend for this (AkonadiTaskQueries::findProjectForTask).
Test Plan: Hovering over a task in the workday shows the project for this task in a tooltip.
Reviewers: ervin
Reviewed By: ervin
Subscribers: Zanshin
Differential Revision: https://phabricator.kde.org/D14591